Application copied from disk image not recognised as correct arch by Finder

Hi,
occasionally, when I download a disk image ".dmg" that contains an application bundle ".app", I can run the application from the Finder by double-clicking on the icon of the application on the disk image, but when I copy the application to my harddisk, either with the Finder or with "cp -rP", and try to start the copy, the Finder gives me "You can't open the application xyz because it is not supported on this architecture".
However the size of the application bundle, as measured with "du(1)" did not change, and sure enough the copy works just fine when I directly launch the application binary from the shell... The latest example of this behaviour was with the supertuxkart-0.6.1a-full-osx.dmg that I just downloaded.
Anybody seen something similar and/or know what causes this strange behaviour?

I have had a similar problem simply making a copy of a .app file. I spoke with Apple support about it and they said this is the desired behaviour when the application is not a universal application.
You can check by opening the info window for the application and seeing if it says Universal next to Application in the Kind field.
If it says Universal, it should copy without problem, if not, then it won't. Apple support wasn't able to give me a clear reason as to why this is, though.

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You really are not getting this.
"I guess I am still completely shocked that as a parent we can't download something for everyone to use."
Why do you continue to think this although we keep telling you that this is not the case.
You do NOT have to purchase anything twice. You can share the music with as many ipods as you like in your household.
The ipods are designed to sync with your computer regularly. You should have been syncing these other ipods with your computer all along, thus transferring the purchases to your computer where that music can be synced to as many ipods as you like.
Take on of the ipods with the music in it. Open itunes on your computer. Plug in the ipod. Do not sync. Click File>Transfer Purchases This will transfer the purchases from the ipod to the computer. Make sure that you have authorized your account on the computer: here are directions for that. http://support.apple.com/kb/HT1420
Unplug the ipod.
Plug in the other ipod with purchased music. Do not sync. Click File>Transfer Purchases This will transfer purchases from the ipod to the computer.
You can now plug in any of the ipods, select what you want to sync and sync.
Have a look at the manual for the ipod. http://manuals.info.apple.com/en_US/iPod_touch_iOS4_User_Guide.pdf

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Then, I surmise that the image is corrupted. If it was made from one of those MBs, then it's easier and faster to use something like Carbon Copy Cloner or SuperDuper! to just put a copy of the good one onto the other one and eliminate mucking with Disk Utility.

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I have had a host of problems since i installed a Time Capsule. The latest is that after reinstalling my system software -- another story -- I have not been able to make back-ups. The message I get is back up failed, disk image not mounted. What is this? On my time capsule there is a disk image of my hard drive on a dog eared page called a sparse bundle. I'm sure this is easy, but I'm stumped.

huk730,
Welcome to the Apple discussion!
Consider the following causes of that error message. Also bear in mind that when you reinstall the system software, Time Machine cannot continue using the same backups as before and will start a fresh set of backups. [http://support.apple.com/kb/TS1338]
*_"The Backup Disk Image Could Not Be Mounted" (Console - “Failed to mount disk image”)_*
First, it is important to distinguish this error message from another, similar Time Machine error that states “The backup volume could not be mounted”. This is important as the causes and cures for these two errors can be very different.
Consider each topic below separately. When one option does not resolve your issue, then move on the next one.
*Unmount the Backup Disk Image* (TC)
If, for some reason, you have manually mounted the Time Machine backup disk image (sparsebundle), or Time Machine failed to eject it after the previous backup, subsequent backups may fail. (Console - “Failed to mount disk image”… “Backup failed with error: 21”)
Eject the backup disk image (white drive icon) by either clicking the little Eject icon to the right of the disk image in the Finders’ Sidebar, or Ctrl-Click the drive icon on the desktop and select “Eject” from the contextual menu. Now try backing up again or launching Time Machine to view previous backups.
*“Disconnect All Users…”:*
If your Time Machine backup drive (“Backup of Users Computer”) is mounted on your desktop or in the Sidebar of the Finder window. then Time Machine may think the drive is already in use. Alternatively, if the Time Capsule hard disk has been recently accessed by a Windows machine, it may not have fully relinquished control. Do the following:
Open Airport Utility and select the Time Capsule on the left.
Click “Manual Setup”.
Select “Disks” at top of window.
Click “Disconnect All Users…” at bottom of window.
Close the Airport Utility.
Now try Backing up again.
“I got it resolved. Apparently it had to do with one of the files being open on the disk from the drive. I had browsed the disk with one of my windows boxes here and it must have left one of the folders "open". Anyway, I rebooted the TC and we are good to go now.”
*Proper Computer Name* #
Make sure your computer has a proper name. Go to System Preferences --> Sharing. Time Machine needs to differentiate your computer from others on your network (i.e. "Bills MacBook" or "Office iMac"). If the "Computer Name" field is blank, create a name. Realize that if this step is necessary, you will likely have to start the Time Machine backup process over again and do another full initial backup.
According to this article, [http://support.apple.com/kb/TS1760], Time Machine may experience problems if your computer name includes certain characters. Make sure the computer name only includes ASCII characters from the following set.
(0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ)
Once a change in the computer name occurs, you should stop and restart Sharing on the affected computer. Uncheck and then recheck Sharing in the Services list on the left.
Let us know if any of the above was helpful.
Cheers!
Message was edited by: Glenn Carter

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I then tried to copy the application to the desktop and it got partway done and then stopped with a message "The operation cannot be completed because an item with the name "Path Finder4" already exists."
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I am running as Administrator and have had no problems with Leopard for the past week until this.
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Hi,
I already posted about this problem on Macworld Forums, so far no answers. Maybe here I'll get some.
The problem is:
whenever I download an app from the Internet, it mostly comes as a disk image. And it's OK if the DMG file contains only app and "read me" file. But more often it contains the alias to /Applications folder.
That's the problem:
the icon for that alias does not show properly, it always generates some icon with another icon above it. Issuing "Get Info" (Cmd-I) command, and tabbing to the icon, then deleting that annoying icon, restoring to the default one, does not work.
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Hi Sanjin
So it is more than only disk images but a system wide problem, in that case, a general approach is needed.
I suggest you run Repair Disk on your start up drive, from your install DVD.
The startup drive can only be repaired from another drive. Simply loading the install disk is not sufficient. You have to boot from the install disk.
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Select your language, then go up to the top menu bar to Utilities and navigate to the Disk Utilities application.
Select the start up drive, then follow the instructions in the First Aid pane where you can click on Repair Disk.
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regards roam

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I've already spent some fruitless and frustrating hours today on diagnosis, and having done tech supp in my career I know what to look for, so this is my last throw of the dice to try to get some kind person to suggest a) a diagnosis, and b) suggestions for a cure.
Without a cure I might as well take a clawhammer to the thing and get a Linux laptop. Ok, PCs are far inferior to Macs with crappy hardware, but at least you don't lose over a thousand quid when your PC laptop fails.
Cheers
Fred Riley
Web Developer, Nottingham, UK

I was able to get a partial fix of this problem by following instructions that I found on the All Experts web site:
Regarding disk images and mounting media:
delete the following files and folders:
* /System/Library/Extensions.kextcache (file)
* /System/Library/Extensions.mkext (file)
* /System/Library/Caches/com.apple.kernelcaches (folder)
(Note that after deleting these files you need to reboot your Mac for the fix to take effect.)
All of these files and folders were date 18 Aug 2009, which is in around the timeframe when I installed the last security update for OS10.4 ppc.
I say the solution is a partial fix, because it did allow me to open some, but not all .dmg files (the problematic ones are showing a checksum error). Now I find that iTunes will not operate (yeah I know that should be another thread), but I have not used it in several weeks, prior to the last OS update.

Hard Drive and Disk Image not mounting

Hey everyone,
I'm running a G5 Dual 2Ghz. with OSX 10.5.8 I'm having problems with a back up hard drive. It is an external Western Digital My Book 1.5TB SATA drive. After using it for a few months, it suddenly did not mount anymore.
*1) It also would not appear in Disk Utility.*
a) Disk Warrior couldn't find the drive (I think because it's formatted with FAT32)
*2) I then took the drive out of the enclosure and put it in the spare bay in the G5.*
a) It didn't mount
b) It did show up in Disk Utility
c) In Disk Utility it wouldn't give me the option to Repair Disk Permissions or Repair Disk
d) In Disk Utility is says under Partition Scheme: Unformatted
e) In Disk Utility I don't have the option to mount/eject only gives me the "info" option
f) Tech Tool did find the drive and it passed all tests
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a) The disk image would not mount with Disk Image Mounter. It would say there is an Unrecognized File System
b) In Disk Utility - I don't have the option to Repair Disk Permissions
c) In Disk Utility - When trying to Repair Disk - I get the error: Repairing Disk failed with error Unrecognized FileSystem
d) In Disk Utility - If I click Open - The Log file says:
+Attach Image+
Initializing...
Verifying...
Finishing...
+Image of "disk0.dmg" attached successfully+
+Mount of "disk0.dmg" succeeded+
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e) Disk Warrior can not find the Disk Image
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a) in Terminal - hdiutil attach -nomount "volumes/untitled/disk0.dmg"
b) in Terminal - sudo hdiutil attach -nomount "volumes/untitled/disk0.dmg"
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System/Library/Caches/com.apple.kernalcaches
ALL UNSUCCESSFUL
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Yes, it will. But if DU says the disk is unformatted then it is also not accessible. If you have files you don't wish to lose then you will need to try recovery software:
Basics of File Recovery
General File Recovery
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The longer the hard drive remains in use and data are written to it, the greater the risk your deleted files will be overwritten.
Also visit The XLab FAQs and read the FAQ on Data Recovery.

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Hi,
I got a new G-Tech 500GB external drive that I've got into three partitions. All of them have Tiger on them but the main one I'm using is giving me problems. I have Stuffit Expander 11 on here and when I try to open a disk image it looks like it's opening but doesn't. Also I try and open Disk Utility and it crashes on me. I did a repair disk permissions a few hours ago after restarting up again and it seemed to be fine but now the problem is back.
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S.

Its the improper unmount of the firewire drive which is the problem. Try to reset all.
1. Shut-down your Mac, and unplug the power cord
2. Turn the power off on your external FireWire devices
3. Unplug the FireWire devices from the Mac
4. Wait for 5 min.
5. Plug the power cord to your Mac only
6. Restart the Mac while holding the Option-Apple-O-F, and keep holding until you get the ">" prompt, then release the keys
7. At the ">" prompt type:
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      set-defaults and hit the Return key
      reset-all and hit the Return key
the last command will restart your mac
8. Shut down your Mac
9. Connect all your FireWire devices to the Mac and turn them on
10. Restart your Mac.
All your FireWire devices should reapear, if not repeat the procedure
How to avoid the issue :
The only really proven way to avoid burning up a FireWire port is to connect all devices and to turn them on PRIOR turning on the Mac. Likely, one must unplug them and turn them off AFTER the Mac has been turned off. If you need to connect another device, then you're on for a shutdown of your machine...  It's a tad annoying but it guarantees that the FW ports won't be damaged.  Be careful when using self powered devices such as webcams, iPods, hard drives or hubs, as they can destroy the port pretty easily. Another thing is to avoid daisy-chaining hard drives.
When the FW port doesn't respond anymore :
In this case, peripherals won't be mounted upon plugging, and won't be displayed in Apple's System Profiler. The self powered devices will still be fed by the port, but won't respond either.  It happens that the PHY just hangs after a surge or a random problem. Once hung, the port will not respond any longer, it is possible to reset the component by going through the following steps :
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http://www.hardmac.com/articles/16/

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Message was edited by: Roger Sinden

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The linked macfixitforums topic is over seven years old and isn't applicable. Follow nerowolfe's suggestions. Once you sort things out, see these:
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Basic Tutorials on using a Mac,
MacFixIt Tutorials,
MacTips, and
Switching to the Mac: The Missing Manual, Leopard Edition.
Additionally, *Texas Mac Man* recommends:
Quick Assist.
Welcome to the Switch To A Mac Guides,
Take Control E-books, and
A guide for switching to a Mac.

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*Next attempts:* the only other thing I can think of is to try daemon tools or something on my PC, or bring the drives into the the school IT guys.
Please let me know what you think would work that I haven't already tried. Though I have redundancy in the backups, I haven't been able to recover some data for my PhD thesis due in a month, and therefore haven't given up on reviving this disk yet.

I've downloaded the DataRescue and FileSalvage trials, and am currently scanning with DataRescue which will take another few hours. Thanks for those recommendations, its so useful to have a trial scan before buying.
*General Question:* I noticed through these various attempts that reformatting extra drives in the current version of Disk Utility has become a little more dangerous than before. For example, I was reformatting a spare disk from FAT32 to HFS+ and the drive became unmountable. This never happened to me in earlier versions of OSX, and now it seems to happen every time, and partly why my partitions got all screwy. Any thoughts?

Application copied from disk image not recognised as correct arch by Finder

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