IMovie won't open after downgrading from Lion to Snow Leopard

Okay iMovie 08' and 11' both worked absoloutly fine on my MacBook Pro (17" Core 2 Duo 2009 model) when I had Snow Leopard installed.
I then upgraded to Lion and iMovie 11' still worked fine but Lion had a lot of bugs so I decided to wipe and install Snow Leopard again. I then used the Migration Assistant to move my Apps from a Time Machine backup to my Mac. Everything worked okay except Java was broken. Everytime I launched a Java application it would say Java 1.5 not found. I managed to fix this with a lot of Googling.
But now I've come across another issue. I noticed that iWeb, iPhoto and iMovie will not open. The icons bounce in the dock and then they finish bouncing and it appears to have loaded, the top menubar says the application name and I can click on File, Edit from the top menu and all the normal options are presented to me. But the main interface of these programs simply does not open. I managed to fix iPhoto by reading online about removing a folder called ProKit.Framework in my Library and that worked for iPhoto perfectly it now comes up and loads like normal. But iWeb and iMovie still do not load. I don't really care about iWeb but I do care about iMovie not working as I use that all the time.
Does anyone have any ideas on how I can fix this?
So far what I've tried:
1. Remove all traces of anything iLife releated on my Hard Disk including pkg receipts, cache files, .pref files and so on
2. Tried just reinstalling the entire iLife suite several times
3. Tried installing Quicktime 7 from the Snow Leopard Optional Installs DVD
4. Tried changing colour profiles on my Display (I read this worked for someone else, did nothing for me)
5. Made a new user account on my Mac and tried to run iMovie from that account, same result it 'runs' but the interface doesn't show up.
Thanks for any help you can provide

I just thought I'd reply to say that I just fixed this by deleting the following folder and afterwards running software update.
iLifeMediaBrowser in /Library/Application Support
It would appear that if you erase this folder and then reinstall iLife it does something that brings this folder back or recreates it. But if you run Software update after erasing it, it downloads this folder from Apple (about 2.5MB) and that fixes the problem completely.
Hope this helps someone else!

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ICal and Mail don't work after downgrade from Lion to Snow Leopard

Hey everyone, after an extremely awful time with with Lion (it knocked out of my audio interface AND my wireless) I downgraded back to Snow Leopard yesterday. I made a Carbon Copy of my Lion drive with all my data on an external drive (which I still have) and after wiping my local drive clean I reinstalled Snow Leopard from my disk. After it was done I chose to transfer data from another system local system (I selected everything) and an hour and a half later everything was transferred over. After doing a software update, I've found that I get big error messages with iCal, Mail, and even the App Store that say they can't open and I'm assuming that it has to do with incompatible data that got transferred from Lion. Any ideas on how to get those programs back up and running?? Thanks so much for you help!
Luke
ps. here's the error message from iCal
Dyld Error Message:
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Indeed the USB issue seems to be related to missing drivers.
You have to install this USB 3.0 driver:
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How can I downgrade from Lion to Snow Leopard?

Hello.
Yesterday, I upgraded my Mac to Mac OS X (10.7 Lion) from 10.6.8 Snow Leopard. However, I wish to downgrade.
Obviously, I would like to not lose any data at all. However, I have never downgraded before.
I still have the Snow Leopard installation disk that came with my Mac.
How should I do this? I was thinking it would be easiest to simply head on over to an Apple Store...
I did some research (aka Googling), and I read up on the subject quite a bit.
If I simply put in the disk, will I be able to downgrade from Lion to Snow Leopard as easily as the upgrade was?
Also, I have heard about holding down the "C" button to do this... how exactly?
I have never backed up my Mac, nor used Time Machine.
Also, is it possible to install Snow Leopard on a separate disk, and set it up so that I can switch between them on command?
Will all of my preferences be saved, or does this wipe everything, not just the system and libraries folders?
I realize that I have a lot of questions, and therefore I appreciate everyone's help in advance. Thanks again.
Sincerely, Zach

Backup your files.
Booting From An OS X Installer Disc
1. Insert Snow Leopard Installer Disc into the optical drive.
2. Restart the computer.
3. Immediately after the chime press and hold down the "C" key.
4. Release the key when the spinning gear below the dark gray Apple logo appears.
5. Wait for installer to finish loading.
Erase Drive
1. Boot from your OS X Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
4. Upon completion quit DU and return to installer. Install Snow Leopard. Restore your files after the installation has completed.

I recently Downgraded from Lion to Snow Leopard 10.6. How do I update to 10.6.2 or beyond?

This is the problem... How do I fix that?

app61 wrote:
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How did you do that ?

How do I downgrade from Lion to Snow Leopard without losing iWork 09? I upgraded my MBP from 10.5 (originally 10.4) to 10.6, then again to 10.7. Should I go back to 10.4, 10.5 or just to 10.6?

How do I downgrade from Lion to Snow Leopard without losing iWork 09? I upgraded my MBP from 10.5 (originally 10.4) to 10.6, then again to 10.7. Should I go back to 10.4, 10.5 or just to 10.6? I don't remember which system included iWork 09 and don't want to lose it. Thanks for any help.

Thanks for the information! My sister gave me the MBP for my daughter with Leopard installed. I purchased Snow Leopard and installed it, then my daughter purchased Lion. So I do have all the installers. If iWork wasn't included with any of those, I guess my sister purchased it while running Leopard. I'll have to contact her. Thanks again.

Successful downgrade from Lion to Snow Leopard?

I will get to my question at the end, but first I must explain the situation:
I have an MBP Intel Core 2 Duo, circa 2006.
The case was falling apart so I bought a new MBP Intel Core i7, September 2011 model.
The new MBP came with Lion, which to my horror did not support PPC applications. I know some of the Mac OS hobbyists will say 'get over it'. However, I use Macs professionally and since I want to eat (so to speak), I must work, and to work efficiently I need Rosetta because there is quite simply no replacements available for some of my quirky software.
Lion has a couple of ways of stopping you upgrading back to Snow Leopard. Here is a simple way to do it, which allows you to keep Lion.
Boot lion and use the disk utility to create a new partition: I took 400 GB for the new SL partition and left Lion with 100 GB. Lion is pretty neat in allowing you to repartition on the fly.
Do the latest software update on the old computer (10.6.8). Restart new computer in target disk mode and connect to old computer using a firewire. On the old computer boot up Carbon Copy Cloner (freeware). Set the old computer as source and the SL partition as traget on the new computer. Simply accept all the default settings on CCC and let it to Clone (ie. backup) the source onto the target. CCC will generate an exact copy of the contents of the old computer's hard drive on the SL partition on the new machine. I believe it will aslo transfer FileVault protected accounts even if the user is not logged in.
Shut down new computer. Reboot holding down the optino key. For some reason the new SL partition was named IEF Drive (or something similar, I cant remember because it reverted back to its original name after a restart). The machine will boot into SL. Go to system preferences and select SL partion as your startup disk. All done in about 4 hours, most of which is waiting for CCC to finish! Whoopeeee.
So far it seems to me like EVERYTHING works just fine. I was particularly suprized that the Thunderbolt port was able to drive my external display either via vga or hdmi adaptors. I half expected that not to work because it is a brand new feature. Of course, it may not work with a Thunderbolt display. Howerer, since the machine is duel boot and I can go to Lion any time I feel like it.
I did have to reinstally Application Enhancer so that my Unsanity Haxies would work, but you have to do that after any migration.
Performance
Geekbench 32 bit overall score:   lion, 8473: SL, 8321
Novabench: lion, 882: SL 859
At first I had the impression that Lion was a bit swifter on start up and GUI response, so I used migration assistant to migrate my old computer user account onto the Lion partition. As expected all the login items and extra system services that came across from the old machine had a penalty for start up and shut down. After timing both I find that SL is slightly faster up and down than Lion. Even so, I am sorry not to be able to use Lion as I liked the look and feel of it right from the get go.
Never mind ...its function over form for me every time
Now my question is to ask whether others have exposed any weaknesses in a SL down/upgrade? It would help if you would post here so that I can head off any problems before I discover them in a critical situation.
Also, do the experts think SL will match the 64 bit performance of Lion, which I was unable to test because I am too mean to pay the 19 bucks for Geekbench?
Finally, I must say that after many years of daily use on countelss machines CCC has never once let me down, unlike TimeMachine.

I had said that the "function" of the user preferences in the ByHost folder won't be preserved on a different computer, not that the files wouldn't be there!
The ByHost folder contents are accurately preserved in a CCC clone, but the .plist files themselves are tagged with the "hardware UUID" of the particular computer they were made on, and will only function on that computer. Peek inside at the names of these preference files and you'll see. It's not an important issue in practice.
From Mike Bombich's CCC Knowledge Base, here:
Can I back up one computer and use the clone to restore another computer?
As long as the architectures match (e.g. intel vs. ppc), then the answer is **probably yes**. However, there are two caveats.
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Hello I want to sell my Mac Book. Lion already did not run well. Therefore I want to install snow leopard back on it and I want to wipe the computer. But it does not work. When I start the computer with the snow leopard and hold the c and apple button then there is only a white screen. I cannot delete the hard drive with the regular disc utilities program and apple r also does not work. What do I do wrong? Can someone help me here?
Thank you!!

It's C on start, not cmd (apple) + C.
Is the Snow Leopard disc the original that shipped with the Mac?
The retail SL disc is only 10.6.3 so won't boot any Mac that shipped with 10.6.3 or later.
It is possible to install SL on an external HD and update it to 10.6.8, then boot to it by holding opt (alt or ⌥) on start up and selecting the external from the list. Erase the internal HDD from the external's Disk Utility (select the top line - the one with the manufacturer's name and the size of the drive).
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Phone AppleCare and order a replacement DVD, or if your computer shipped with 10.6.2 or earlier and you don't need iLife, buy a Snow Leopard DVD from the online Apple Store. Once you have it, use it to erase or repartition the internal drive and install Snow Leopard onto it.
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== User Agent ==
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us) AppleWebKit/533.16 (KHTML, like Gecko) Version/5.0 Safari/533.16

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https://discussions.apple.com/thread/3800524
Oliver

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Written just for you (ok it's a paste)
Back to Snow Leopard from Lion install method
Read and print out these instructions, your computer is going to be offline and you wil be cutoff from help until your machine is restored.
Clear the Desktop, Downloads and Trash of anything you wish to keep by placing their files in the respective Documents, Music, Pictures, Movie folders.
Disconnect other drives except the backup drive as to avoid any mistake.
Backup ALL your Users folders (Documents, Pictures, Movies, Music etc) manually (drag and drop methods) to a (not TimeMachine) external powered drive (HFS+ journaled formatted in Disk Utility) and disconnect, your going to be wiping the entire disk of ALL DATA. (warning, everything will be gone and not recovered, OS, programs, files, Windows etc all gone.)
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Here we go!
Hold c and boot off the 10.6 installer disk that comes with your computer and second screen in just STOP there, don't install OS X yet.
Look at the Utilities Menu for Disk Utility.
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http://support.apple.com/kb/DL1399
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TONS of broken software after downgrade from Lion...

Ihave a 13" MBP with the 2.3GZz Intel COre i5 processor. Itcame with Snow Leopard and in a moment of foolishness (Mac Newbie) Ispent the $29 and updated to Lion as soon as it came out. Needlessto say, I was very unimpressed as I lost Front Page, Expose, andSpaces. After a few days of hair pulling and research, I goteverything back to normal on Snow Leopard, so I thought. Acouple programs were broken, some completely missing.
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Thereare a few random items, and then a bunch doing almost the same thing. I think some sort of library got damaged. I would havethought restoring to the backup would have fixed this. Themethod I used was to wipe the HDD with the Install DVD, thenreinstalled on a blank machine, and restored via the install discs. Here is hopefully a full list of the broken items.
1) Desktop and Screen Saver via Preferences or the pop up ChangeDesktop Background. However I access this it will bring uppreferences and then quit as it tries to access the second part. Oddly I found that going through every screen in preferencesand changing a few items back and forth, temporarily fixes this. Butafter correctly accessing the desktop background 1 or 2 times, itlocks up again. I can change the background by selecting theoption in Safari though...
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Therest of the problems are all with the iWorks software suite. Noneof it works. iTunes was also broken, but it was the first thingI fixed via a simple reinstall.
3) iWeb is basically all grayed out. It loads up quickly,but no projects open. And in the taskbar I can't open a newproject. I did have a website I had been building (no big dealif lost).
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James Somners wrote:
iPhoto now opens and claims my library was edited with a newer version. "Do you want to make a new library or quit?" I do not remember upgrading iPhoto, I only used it for the first week or so,
Did you ever open the iPhoto library with iPhoto on Lion? That's what it sounds like.
iWeb is 3.0.4 (601)
That's the most up-to-date version, and runs on either Lion (with a few quirks), or Snow Leopard.
iDvd won't stay open long enough to check.
Select and right-click it and choose Get Info.
I don't use it anymore, but 7.1.2 opens on Lion and Snow Leopard for me.
iMovie is 9.0.4 (1634) and says "iMovie '11"
I never upgraded from 8.0.6, and don't use it anyway, but that should work.
GarageBand is 6.0.4 (427.84) and also says "GarageBand '11"
Also never updated from 5.1, but that should work.
And sure enough in the themes folder for iDvd, I see one for iDvd6, and one for iDvd7. Sooo um what is the best course to fix this? Reinstall iLife '11? Or reinstall the older stuff via my disc again?
I'm not sure that's a problem. It may be so you can use the old themes with the new version. You might want to check that in the iDVD forum at https://discussions.apple.com/community/ilife/idvd
I do find both of those in my /Library/Application Support/iDVD/Themes folder (and a Tutorial folder).
In my ~/Library/Application Support/iDVD/Installed Themes folder, is only iDVD 6
I suspect that's correct, the difference being the names Themes vs. Installed Themes.
It doesn't sound like preference file problems, but have you deleted the appropriate ones (without the app being open)?
What messages do you get in your system.log when you try to open these apps?
Otherwise, I'm about out of ideas here. I can't imagine what's going on -- it sure looks like you have the right versions of these, at least.

IMovie won't open after downgrading from Lion to Snow Leopard

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