My Safari can´t open .dmg files after downloading

I updated to Mac OS X 4.9. But since this update, Safari cannot open .dmg files after downloading! On 10.4.8 it was not a problem. What can I do?
eMac G4 PPC Mac OS X (10.4.9)

Darn...I thought that would do the trick.
Given the other problems you mention, more and more, it seems a reinstall of the OS, using Archive and Install is going to be necessary. Have you ever done an Archive & Install of the OS? Important you carefully read the description of the process. If you are uncertain, I find the Take Control Upgrading to Tiger E-zine to be a very helpful guide.
Once you reinstall the OS, then you can upgrade to 10.4.8 using the combo update, repairing permissions via Disk Utility in your Utilities folder when complete.
One question: Not sure why you have run into all these problems on the 10.4.9 upgrade. It worked without problem for me. Anything unusual happen during the install?
Message was edited by: Hawaiian_Starman

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Malware - Safari users - disable Open"safe" files after downloading

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Visiting malicious sites or apparently just browsing some Google Images searches will automatically download a zipped file. If the Safari Preference to Open "safe" files after downloading is checked it will unzip and run the installer for the malware.
While installing requires user intervention to click through the installation, the most recent variant will apparently install for a user without needing an administrator password.
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How do I get that file type on the "safe to open" list?
I'm not sure there is any way to do that, and if there is, I wouldn't recommend it, because Word files are not necessarily safe to open -- they can include harmful macros. You can try the suggestion linked below, but I haven't tested it.
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I encountered the same problem. In my case, the culprit was a plug-in in the Internet Plug-Ins sub-folder of my User Account's Library folder.
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<https://discussions.apple.com/thread/5117605?start=0&tstart=0>
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I can't open DMG-files anymore because OS X associates dmg-files with another program. Usually when I opend .dmg files a "virtual disk" opened, now another program starts.
I tried the Open with (Openen met in Dutch) function, but I don't know which program I have to choose. When I have this problem on a Windows PC I just select explorer.exe. Which file do I have to choose on my Mac? Or is there another way to solve this?
Mac Mini Mac OS X (10.4.5)

580/3026
Hi mrtn87,
welcome to Discussions!
/System/Library/CoreServices/BOMArchiveHelper.app opens .zip files,
and
/System/Library/CoreServices/DiskImageMounter.app opens the .dmg files.
If you have OnyX, you can try running the "Reset LaunchServices Database" and "Reset links between documents and applications" tasks, see if the problem disappears.
Here is a Terminal command you can try if you don't have OnyX (or one of the usual utilities):
/System/Library/Frameworks/ApplicationServices.framework/\
Frameworks/LaunchServices.framework/Support/lsregister \
-kill -r -domain local -domain system -domain user
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I've read reports of people having trouble when storing Numbers 3 documents on Dropbox. I think it's related to the fact that they're not really "files." They're "packages" that look like files. I had thought that Dropbox had cleared this up with their latest update. You should be on Dropbox version 2.4 or later.
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HT2041 I receive an error message when opening up a downloaded program as "Safari can't open the file because no availabel application can open it". Not sure what exactly this means or what I have to do!

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Help! Can't open .dmg files suddenly, and can't find stuffit expander application!

My iMac is currently running on Mac os x 10.5.8, **out of nowhere my computer can't open dmg files. I can't seem to find the stuffit expander application anywhere in my hard drive either, which usually opens these files. Is there another application that can open dmg files? Help Please! I need to open multiple dmg files tonight and can't figure out a way around this. Downloading/running a new stuffit expander application also happens to be a .dmg file. If anyone can help me I'd appreciate it so much!

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[email protected]
Message was edited by: macjack

HT1338 can't open dmg files on my new iMac

I have a brand new iMac updated OS X and I can't open dmg files. It appears that I don't have DiskImageMounter. What do I need to do?

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I can't open dmg files on my new MB Air. What can I do?

I can't open dmg files on my new MB Air. What can I do?

How are you trying to open it? What happens when you double-click it in the Finder? In the Finder Preferences do you have Show these items on the desktop: "CDs, DVDs, and iPods" selected?
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the safari "Open safe files after downloading" stopped working. Even when is checked, it doesn't open anything, no jpgs, no dmgs, no zips. Not sure what could've happened. I installed the new Safari 4.03 update and Speed download today. Any ideas what may be causing this problem? Thank you

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My Safari can´t open .dmg files after downloading

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