Windows 7 PDF Thumbnails Missing

When I open a folder in Windows 7, I can't see any thumbnails for any pdf files; it just shows a pdf icon for each file.
I am running 64bit Windows 7 Home Premium and Reader 9.2.0.
HELP!!

Install the Apple drivers off OS X DVD.
You should be using 10.6 and BC 3.x

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PDF thumbnails missing after optimization?

Hello. I have quite an urgent question. My business is sending out a PDF deck tomorrow and I am currently creating our PDF using 'Combine files into PDF' method in Acrobat Pro on Mac - default size compression.
When I finish creating the PDF (not optimized), all the pages are present. However, for the sake of sending the PDF in emails, I need to either Save As an Optimized PDF or Save As a Reduced Size PDF. I will be sending an Optimized PDF, but in both cases, as soon as Acrobat finishes creating the smaller PDF, I have page thumbnails missing/blank in the same places every time (pages 1, 5 and 33).
I have attached screenshots to this thread as an example. It's very odd, because the majority of people I've tested the PDF with say they have no issues with blank pages and that all pages appear fine in the PDF - both when viewing on computer and mobile devices, iPads etc. For me personally, the only issue with blank pages is when opening the PDF in 'View' mode - if I download the complete file there are no pages missing.
I was wondering if anyone can help me resolve this issue - I just don't want to risk sending this out to clients and some being unable unable to view certain pages in the PDF!!
[url=http://postimg.org/image/ikl48huyj/][img]http://s9.postimg.org/ikl48huyj/Screen_Shot_2013_11_06_at_16_14_35.jpg[/img][/url]
[url=http://postimg.org/image/jjfoc2m5d/][img]http://s16.postimg.org/jjfoc2m5d/Screen_Shot_2013_11_06_at_16_14_46.jpg[/img][/url]

After migrating, the iPhoto library appeared in the Library window in my left task pane of Aperture. I believe that the masters for the photos from iPhoto remained in iPhoto.
When I did the migration from my Time Capsule I pulled in my iPhoto Library and Aperture Library into my Pictures folder. Then I launched Aperture and everything looked great, except the thumbnails. The folder / project structure remained and both libraries were there. The pictures are actually there too. If I work on a single photo, the photo appears, but the thumbnails don't when viewing at a higher level such as a folder, project or all Photos.

PDF Thumbnails in Windows explorer...

I have noticed that when you choose thumbnail view in XP or Vista, it only shows a adbove icon instead of an actual pdf thumbnail of th actual document. When reviewing hundreds of PDF's in windows explorer, this is a necessity. Why was this a standard installed option on Adobe 7 and then lost in version 8 and 9. This has to be a program glitch. This is becoming more and more of an important issue in my office as time goes on.
Please note that I AM NOT referring to seeing thumbnail views from within acrobat. This is a simple option that I know how to enable. I need to see them from a ile explorer window.
Thanks so much in advance for any help.

I've had Acrobat 8 on XP for quite some time and all my thumbnails in Explorer were showing the first page, but then a couple of weeks ago I uninstalled some older versions of Acrobat in a bit of a clean up and suddenly I was just left with the icons. Disaster - I too have hundreds of pdf files and seeing the colour of the front page before I open a file saves me so much time.
Loading Reader didn't work for me (sorry Mike) but I found some advice in another thread to try running Repair Acrobat Installation under the help menu, then restarting. Success!!! All my thumbnails are back as I need them.

Windows 7 x64 and PDF thumbnails problems

I have CS5 and Acrobat 9 and under Vista x32 I could see the pdf thumbnails nicely. Yesterday I installed Windows 7 x64 and now all I can see are the Adobe icons. I read some other threads that describe opening up the files through acrobat and then changing to either large icon or extra large icon to fix the problem. This works, but when I go back through windows explorer everyhting is back to just icons. I have made sure that explorer is set to always view thumbnails and I don't have this problem with anyother file types such as Word documents or image files. I have also tried rebuilding the installation as anthoer poster had suggested. Has anyone found a permanent fix for this?
Thanks,
Troy
University of Nebraska - Lincoln
Department of Chemistry

Thanks for the link to the fix (by Pretentious Name . com).
I note that over a year has passed since you posted this solution, and Adobe has still not corrected the problem.
Problems, errors, and omissions in software are normal and acceptable - what is not acceptable is that Adobe choses to not take action to correct certain problems, especially when the user community identifies both the cause and the solution to the problem.
The folks at Adobe shoud take a close look at this web page: http://www.pretentiousname.com/adobe_pdf_x64_fix/ - it contains a complete and well-documented description of both the cause of the problem and the solution to the problem.

Vista x64 SP1 PDF Thumbnail Previews Missing

I recently loaded Vista Ultimate x64 SP1 on my PC. After installing Adobe Reader 8.1.1, I don't see the thumbnail previews for PDFs in Windows Explorer - only the Adobe icons. How can I get the thumbnail previews?

Since you people are no help, I will log my own attempts to resolve this issue, in case I need to do it again in the future.
I use Foxit Reader for PDF viewing, because it's much better. I installed Adobe Reader 8.1.1 to get my PDF thumbnails in Windows Explorer back. I also have Photoshop CS4 installed. Here are my steps so far:
1. Ensure that my folders are in "Large Icons" view, make sure "Always show icons..." option is disabled.
2. Uninstall Foxit Reader & Adobe Reader.
3. Remove Adobe Reader & PDF file type entries from registry.
4. Ran Unassoc to remove the PDF file type from Windows.
5. Ran Disk Cleanup to remove Thumbnail files.
6. Installed Adobe Reader 8.1.2.
* At this point, I effectively had a clean install of Adobe Reader. However, my PDF file thumbnails still show up as the stupid Adobe icon.
7. Ran xplorer2 32-bit in Thumbnail view. My PDF thumbnails show up both in the file explorer view and in the preview pane (Draft and Native).
8. Ran Adobe Bridge CS4. PDF thumbnails show up there, too. So, at least I now have 2 effective workarounds to Adobe Reader's ridiculous shortcoming.
9. Ran the 32-bit Windows Explorer. No problem with PDF thumbnails. Hot damn!
10. Closed 32-bit Windows Explorer. Opened regular Windows Explorer and browsed to the same directory. PDF thumbnails still working.
11. Browsed to another folder with Windows Explorer. No PDF thumbnails.
12. Reinstalled Foxit Reader 3.0 so I don't have to suffer through actually using Adobe Reader. Made sure not to set it as the default PDF reader.
13. Verified thumbnails in 32-bit Explorer still work. They do. *******.
There you have it. 3 separate workarounds. Maybe Adobe will fix this problem in their next release. Maybe they'll also create a PDF reader that isn't 100mb. Don't hold your breath. Thank me and follow my instructions instead.

No pdf thumbnail preview in Windows XP Explorer

I have searched and tried many different fixes to this issue and have had no luck in finding a solution.
I have over 700 PC's that due to a huge security flaw is forcing me to upgrade from our current version of Adobe Reader 8.1.0 to the 'fixed' version of 9.1.3.
Due to the huge number of PC's I have this all being done with automated scripts. The issue is not with the deployment, but the funcationality of PDF thumbnails.
Once upgraded, the PCs can no longer see a thumbnail view of the PDF's.
Let me start with the method of upgrade.
- I began with creating and admin install of Reader 9.1
- I then applied patch 9.1.2 to that admin install.
- After that I then applied the 9.1.3 patch as well.
- Using the -r option I created an answer file (setup.iss) file for the install.
- I then pushed the installation silently to all the machines.
I thought that this was simply due to the fact that they were upgraded, meaning that the 9.1.3 install had to first remove 8.1.0 and it may not have been done cleanly. However, I ran the same install on a PC that had NO Adobe products on it whatsoever and yet it still has the same issue even though it is a 'clean' install.
Things I have tried.
- I have tried uninstalling and re-installing the package.
- I have tried re-creating the Admin Image and re-installing it.
- I have tried associating PDFs with notepad, then back to Adobe Reader.
- I have re-registered the pdfshell.dll file.
- I have run the Repair Installation utility.
My guess is that there has to be a simple registry entry or .dlll file that is causing this.

I have the same issue, currently running acro 9.3 and reader 9.3 under vista pro - I tried de/reinstalling reader but it did not help any. Its a pity there is no support or even any correspondence by acrobat - this forum has more than ten threads dealing with this.
Kind regards,
Aurel

Adobe Illustrator CS5 does not show PDF thumbnails when browsing

When I am browsing through PDF files to open one of them in Adobe Illustrator CS5 it does not show the thumbnail. When I am browsing in Adobe Acrobat it does show the thumbnails. If I have Adobe Acrobat open and am browsing through files and the thumbnails are showing then if I open Adobe Illustrator and browse for a file the thumbnail does show up.
How can I get Illustrator to always show the PDF thumbnails. I have to frequently browse through thousands of PDF files and it is imperative that I can see the thumbnail for these PDF files. I primarily use Illustrator to edit PDF files.
The computer is Windows 7 Enterprise 64 bit edition. Thumbnails barely work when browsing files through Explorer. Some thumbnails will show, but not very many of them and it is extremely slow to load the thumbnails that will display.

Bob,
So I am assuming you are talking about viewing the files using this method first:
To use the 32-bit version of Windows Explorer, follow these steps:
Click Start, click Run, type the following in the Open box, and then click OK:
Drive_Letter:\windows\syswow64\explorer.exe /separate
Note The placeholder Drive_Letter represents the drive where the x64-based version of Windows is installed.
Please let me know if I am missing what you are saying here.

Acrobat X pro pdf printer missing/ puzzle re forum fixes

Licensed Acrobat X pro installed; but no pdf printer.
Attempted workaround
<http://blogs.adobe.com/dmcmahon/2012/06/04/acrobat-pdf-printer-missing-after-installation- on-windows-64-bit/>
Solution 1 repair --did not work
Solution 2 --Uninstall and reinstall: I installed as part of CS5.5...do I have to unistall entire or just Acrobat?
Solution 3: I am copying below with notes as to what didn't show up
Manually install the PDF Printer
Click Start > Control Panel > Devices and Printers
Select Add a printer
Select Add a local printer
Check Use an existing port and select Documents\*.pdf (Adobe PDF) from the drop down. Click Next
[No such file on 'existing port.' attempted using NITRO pdf which came with this new lenovo machine [but never availbale and not installed --jst recommended, although this file exists < NitroPDF Port: (local port) > which I attempt]
Click the Have Disk… button
Click the Browse… button
Navigate to C:\Program Files (x86)\Adobe\Acrobat 10.0\Acrobat\Xtras\AdobePDF
Select AdobePDF.inf from the list if using Acrobat Pro, or AdobePDFstd.inf if using Acrobat Std, then click the OK button
[this files exists]
You will see many Adobe PDF Converters in the list, however count six down from the top and click Next (you may need to try this numerous times to find the correct Converter from the list that works with your version of Windows)
[Attempted six down--no dice].
Name your printer, e.g. Adobe PDF
Follow the rest of the prompts and your PDF printer should now be installed correctly
If you are later prompted for the ADPDF9.PPD file, it can be found in the C:\Program Files\Adobe\Acrobat 10.0\Acrobat\Xtras\AdobePDF\<OS version> folders.
[Once I hit 'test' print it states < Windows cannot find 'C:\Program Files (x86)\Adobe\Acrobat 11.0\Acrobat\Acrotray.exe'.
BUT i'm not using Acrobat 11.0!
Any ideas, o wise ones?
best,
skylar1

Hello All,
I just figured this out--
I installed updates in the Help tab, and the files required, including pdf printer were installed.
Works!
I realize that this is a gen behind in software but I am running legacy large format printers and the newest is not the best in this application.
Hope this helps....
skylar1

PDF Thumbnails disapear after installed CS3 on XP-Vista

here is the problem, we have adobe reader on all our computer in the company, we are a printing company so PDF is the file of choice in our workflow. we have CS-CS3 installed on XP,Vista and 2003(automation server)
Everyone who has only Reader installed can see thumbnails in explorer XP and Vista of the PDF.
Problem is in the Prepress dept where CS3 is installed, As soon as CS3 gets installed on XP or Vista the Thumbnails stop working. (never worked on the mac osX but not an issue 3rd party software fixed that)
Why? if they worked before CS3 when only reader was installed..
Did Adobe disable PDF thumbnails as soon as you install the Creative Suite. Is this an Issue with just my company? lol
This is really a user complaint I have to deal with every day from employees in Prepress. "Why Can't I see a preview of the file in explorer before I open them"
I hear that it was because Psicon.dll and aiicon.dll were taken out due to problems... but why does it work with only reader installed which doesn't use those?
any ideas? I think If I keep hearing them complain I'll make em all use Scribus and inkscape for a week. hehe.

The thumbnails on my vista system are also not showing properly. It is very strange because I do have a SINGLE sole thumbnail of a pdf file displaying properly but the rest of my pdf files are all generic red acrobat icon. I am determined to get to the bottom of this as I have tons of ebooks and pdf files that I need to view in thumbnail format.
The roxio forum were also talking about loosing thumbnails in vista's explorer. The techs there claim its a vista problem and will wait till MS addresses the issues. However, I am not completely convinced.
The fact that we seen it work partially with some systems and the fact that I can generate a single thumbnail tells me there is more to it than meets the eye.
I suspect a registry tweak will solve all the problems.
Here's what I found so far.
On my XP system the thumbs works perfectly.
In the taskmanager I noticed that there is an auxiliary component
to acrobat that runs along side with the main executable;
"AcroRd32Info.exe" this file is what causes explorer to generate the thumbnails and is triggered only when the mouse hovers over an acrobat file.
With Vista Biz, I noticed that in taskmanager the AcroRd32Info.exe is missing. When I attempt to manually run this file, it fails to run with no error message. So my next guess is that some service might be blocking the exe from running or got disable during some tweaking.
I have another system that is identical to mine and brand new. I will test further. If someone can verify if AcroRd32Info.exe runs in there vista taskmanager and see the thumbnails appears or not that would be great.
Thanks
al

PDF printing Missing installed prnters

We're starting to see an issue where a machine will have several printers installed people can print to any of then from word, excel, Chrome etc but for PDF's only one or sometime none show up in the drop down for the list of printers. We're using adobe
reader but I've installed Foxit on one I'm testing and it doesn't show any printers installed either. Its not all users. I can;t find a reason PDF docs by whatever viewer wouldn't see the installed Printers
Jason

did you try with different pdf files?
try also this solution
http://blogs.adobe.com/dmcmahon/2012/06/04/acrobat-pdf-printer-missing-after-installation-on-windows-64-bit/
Solution 1
Repair the Acrobat installation using the option in the Help menu.
Solution 2
Uninstall and then re-install Acrobat on your Windows OS.
Solution 3
Manually install the PDF Printer
Click Start > Control Panel > Devices and Printers
Select Add a printer
Select Add a local printer
Check Use an existing port and select Documents\*.pdf (Adobe PDF) from the drop down. Click
Next
Click the Have Disk… button
Click the Browse… button
Navigate to C:\Program Files (x86)\Adobe\Acrobat 10.0\Acrobat\Xtras\AdobePDF
Select AdobePDF.inf from the list if using Acrobat Pro, or
AdobePDFstd.inf if using Acrobat Std, then click the OK button
You will see many Adobe PDF Converters in the list, however count six down from the top and click
Next (you may need to try this numerous times to find the correct Converter from the list that works with your version of Windows)
Name your printer, e.g. Adobe PDF
Follow the rest of the prompts and your PDF printer should now be installed correctly
If you are later prompted for the ADPDF9.PPD file, it can be found in the
C:\Program Files\Adobe\Acrobat 10.0\Acrobat\Xtras\AdobePDF\<OS version> folders.

Pdf thumbnail number / label - want absolute, getting relative

Hi!
I'm working on the beginning of a book and am having a problem with how the the pdf thumbnails are labeled
• It has a cover and an introduction with no page numbers.
• That's followed by a chapter marked as a section starting with page 1 and the prefix "Challeng."
• It's set not to display the prefix on the page.
• The doc itself looks great in both InDesign and when exported to pdf.
The problem is that the pdf is showing thumbnails entitles "Challeng1, Challenge2, etc. in the chapter, as you can see in the image. It should go from 5 to 6 in the thumbnail, while retaining the number 1 for section numbering.
• I have selected absolute numbering in InDesign for the doc overall.
• In the pages window in InDesign, I do have the correct absolute numbering.
• Same result in Mac Preview as in Adobe Reader.
After researching the help, I've been unable to find what I am doing incorrectly and would love some help.
I'm working in CS4 on Mac OS 10.6.7,
Thanks in advance. I'm eager to get out this sample chapter ASAP and this pdf thumbnail issue is my last hurdle, I believe.
Best,
Caryn
http://Animal-Impact.com

You will need Acrobat to change the label of a page, including the thumbnail label. To change in Acrobat, Advanced > Document Processing > Number Pages.
If you have sections in your document, the Page Numbering View Preference affects the label in the page panel, and the page reference for printing, but does not change how the label is recognized in Acrobat.

Adobe PDF Printer Missing Fix - Adobe Acrobat 8.1 - Vista

Adobe PDF Printer Missing Fix - Adobe Acrobat 8.1 - Vista
1. Type "C:\Windows\inf" into the search box on the start menu.
2. Locate the INFCACHE.1 file and right-click it and select Properties.
3. On the INFCACHE.1 Properties window tab to the "Security" tab and click the "Edit" button to change permissions on this file.
4. On the Permissions for INFCACHE.1 window click the "Add" button.
5. On the Select Users or Groups window click the "Advanced" button.
6. A new Select Users or Groups window will open and then click the "Find Now" button.
7. The search results are sorted alphabetically; locate the username you logon to Windows with and then double-click.
8. Under the "Enter the objects names to select..." you should see something like this YOURCOMPUTERNAME\Yourusername
9. Now click the OK button.
10. You will now return to the Permissions for INFCACHE.1 window.
11. Under the Permissions for Yourusername you need to tick "Full Control" under the Allow column. Click the "Apply" button and then the "OK" button.
12. You will be prompted with a "Windows Security" window, just click the "Yes" button and continue.
13. Delete the INFCACHE.1 file.
14. Restart your computer.
15. Open Adobe Acrobat 8.1
16. Locate the Help menu item and click Repair Acrobat Installation
17. Restart if requested to do so.
This fix worked on Windows Vista Business Edition (32-Bit).

I have windows XP media center. I uninstalled Acrobat 8 to download Acr 9 pro extended. No adobe printer was installed .
Tried the steps given here by Steve Lionel. I was able to add the "Adobe PDF Converter" as printer. Although after the 7th step in Steve's fix, the wizard asked me to search for some files (from XP CDrom) which I was able to locate in the Windows folder-drivers folder and the system32-spool folder.
I went to acrobat,opened a pdf file and tried to print with this printer and saved it on the desktop. A file appears, but adobe cannot open it however it activates adobe illustrator and opens in that program.
Lots of time has gone. No solution yet.
Appreciate any suggestions.
Thanks
Update!!!
I tried printing on this printer from a webpage and it converted the webpage like charm.
I am more than happy even if I get to use this printer to convert webpages to pdf as now I don't have to install those shady pdf converters and printer drivers.
This is good as the fix given here works even for XP.
Thanks for this wonderful solution.

PDF Export: Missing Graphics

PDF Export: Missing Graphics Below is a section of code we are using to export a document as a PDF. The code will work 99% of the time, but occasionally we are getting the resulting PDF with some of the linked PDF components completely missing! The only way we have been able to reproduce this is (strangely) by continually opening and closing 'Windows Explorer' windows (We are using CS2 on XP), just as the process begins, until the final PDF is created. Our customer (who has hilighted the problem) would clearly not be doing this but we feel there is an issue here. (If the keyboard and mouse are left completely alone, the process is successful... 100% OF THE TIME!). The problem occurs both on site and at base, the linked PDF's are located on the LAN. The code snippet (with error checking taken out for brevity) is below: UIDRef pageUIDRef = PCSImageUtils::GetFirstPageUIDRef(); UIDList temp = ((UIDList)(pageUIDRef)); ErrorCode status = kFailure; do { // obtain command boss InterfacePtr<ICommand> pdfExportCmd(CmdUtils::CreateCommand(kPDFExportCmdBoss)); // set export prefs InterfacePtr<IPDFExportPrefs> pdfExportPrefs(pdfExportCmd, UseDefaultIID()); InterfacePtr<IPDFExportPrefs> appExportPrefs((IPDFExportPrefs*)::QuerySessionPreferences(IID_IPDFEXPORTPREFS)); pdfExportPrefs->CopyPrefs(appExportPrefs); // set SysFileData PMString pmFilePath("C:\\Outputfile.PDF"); IDFile sysFilePath(pmFilePath); InterfacePtr<ISysFileData> trgSysFileData(pdfExportCmd, IID_ISYSFILEDATA); trgSysFileData->Set(sysFilePath); // set UI flags InterfacePtr<IUIFlagData> uiFlagData(pdfExportCmd, IID_IUIFLAGDATA); uiFlagData->Set(kSuppressUI); // set UIDList containing pages to output (item list of command) UIDList theList(temp); pdfExportCmd->SetItemList(theList); // set UIDRefs containing pages to output (IOutputPages) InterfacePtr<IOutputPages> outputPages(pdfExportCmd, UseDefaultIID()); outputPages->Clear(); IDataBase* db = theList.GetDataBase(); outputPages->SetMasterDataBase(db); int32 nProgressItems = theList.Length(); for (int32 index = 0 ; index < nProgressItems ; index++) { outputPages->AppendUIDRef(theList.GetRef(index)); } // set PDF document name (get name from IDocument) InterfacePtr<IDocument> doc ((IDocument*)db->QueryInstance(db->GetRootUID(), IID_IDOCUMENT)); PMString documentName; doc->GetName(documentName); outputPages->SetName(documentName); // finally process command status = CmdUtils::ProcessCommand(pdfExportCmd); } while(false); Thanks in advance. Dave Wilson.

Hi Dave,
It looks like a problem with unsafe threads inside command ...
Did you tried set some preferences from next ?
SetPDFExOmitPDF( kExportOmitPDFOFF )
SetPDFExOmitBitmapImages ( kExportOmitBitmapImagesOFF )
may be help you stabilize export process ...
Pavol Nachaj
www.exec.cz
Prague

PDF thumbnail generation has stopped working

Hello Together,
formerly I was using Adobe Reader X at an actual Patch Level on a 64 Bit Windows 7 system. At that time PDF thumbnails were no subject for me. Now I've upgraded to Adobe Acrobat X Pro and uninstalled Adobe Reader X. Then I wanted to use the thumbnails. That was no problem as I found a link to a tool which fixed my issue: http://forums.adobe.com/thread/305220
Everything worked fine for me, until I noticed that one of my applications needed an installed Adobe Reader to work properly. So I reinstalled the Adobe Reader on my system again. This caused to stop the thumbnail generation: PDF files which existed prior to the Adobe Reader installation still have a thumbmail icon preview, but those who were generated after the installation still appear as a PDF icon.
Before installation the fix from thread 305220 my workaround was to open Acrobat X, the navigate to the open dialog, moving to the folder with the PDFs within and wait that Acrobat finished the thumbnail generation. But this workaround now is out of service, too. So my assumption is, that reinstalling Adobe Reader screwed up something in my Adobe installation which I cannot find at the moment which has nothing to do with the initial problem with displaying thumbnails.
Performing some repair installation didn't help:
   (1) repair Adobe Reader, then repair Adobe Acrobat --> no change
   (2) repair Adobe Acrobat, then repair Adobe Reader --> no change
   (3) repair Adobe Reader only --> no change
   (4) repair Adobe Acrobat only --> no change
   (1), then apply fix from thread 305220 --> no change
   (2), then apply fix from thread 305220 --> no change
   (3), then apply fix from thread 305220 --> no change
   (4), then apply fix from thread 305220 --> no change
   apply fix from thread 305220, then (1) --> no change
   apply fix from thread 305220, then (2) --> no change
   apply fix from thread 305220, then (3) --> no change
   apply fix from thread 305220, then (4) --> no change
I hope, that I'm not the only one who got this problem and, hopefully, someone found a solution for this.
Regards
   TheCuriousOne

Loreto María wrote:
My IPod nano 2nd Generation, has stopped working, it gets frozen and I get a message telling to go to "www.apple.com/support" but I cannot get any support there, anyone knows if It can be repaied. Thanks a lot in advance. Regards. Loreto
Why not?
Did you at least download & read the user manual?
You can always call Apple Care if you are still under warranty. Otherwise, take your iPod to an Apple Store or an AASP.

.pdf Thumbnails disappear when installing Acrobat Pro 9

Since i have installed Acrobat Pro 9 the .pdf Thumbnails in Windows Explorer won't show up when i choose the the normal Adobe Reader 9 for standard opening .pdf Files (which i do because its faster). I'm using Win7 32bit are there any suggestions ? this is really a bad bug in my mind.

You can try this. Not sure if this will definitly help but I hope this should:
Delete the following preferences folders:
      a) ~/Library/Application Support/Adobe/
      b) ~/Library/Caches/Acrobat/
      c) ~/Library/Caches/Acrobat/
      d) ~/Library/Preferences/Acrobat Distiller Prefs
      e) ~/Library/Preferences/Adobe/
Here ~ represents your home directory. Empty your trash, Restart the machine and then start the Acrobat.

Windows 7 PDF Thumbnails Missing

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