You can't open the application "..." because it is not supported on this type of Mac.

OK, a bit of research suggests that this error occurs when you try to open Macport package on machines running in 32bit mode.

Have you somehow changed either this app or your startup disk to 32 bit mode? Again, I can't help wondering whether these two accounts that you are talking about are really on the same startup disk (you still haven't confirmed that). Perhaps, you changed from 64 to 32 bit between changing accounts. Did you restart and hold down the 3 and 2 keys, for example?

In any case, ensure your machine starts up in 64 bit mode by running this command in Terminal or restart and hold down the '6' and '4' keys when powering on.

sudo systemsetup -setkernelbootarchitecture x86_64

Further info see http://support.apple.com/kb/HT3773

'fraid I'm a bit stumped. I thought I'd reply to bump this back up. Maybe it'll get noticed by someone more knowledegable who'll have an answer for you.

I'll keep an eye on this thread as I'd like to know the answer myself.

Good luck.

Does a Finder-Get Info on the this file show a checkbox for open in 32 bit on ML ?

/System/Library/CoreServices/Installer.app/

HI,

Mine does have the 32bit option

However some of the dates on yours are different to mine.

The Created and Modified Dates are different.

I would be tempted to Download and Install the COMBO version of the OS X 10.8.2 update over what you have.

8:14 PM Wednesday; December 19, 2012

Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

 iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 Couple of iPhones and an iPad
"Limit the Logs to the Bits above Binary Images."  No, Seriously

If you don't have the option for starting an app in 32-bit, my guess would be you are somehow running in 32-bit. I didn't know that was possible on Mountain Lion. A Mac in 32-bit can see 8 GB of memory (It ain't Windows).

In the Terminal, copy and paste this command and post the results:

uname -a

Just running the command posted by softwater will not switch your Mac to 64-bit mode. You must restart after setting that preference. However, I didn't think it was possible to run ML in 32-bit mode.

softwater wrote:

ensure your machine starts up in 64 bit mode by running this command in Terminal or restart and hold down the '6' and '4' keys when powering on.

sudo systemsetup -setkernelbootarchitecture x86_64

Barney-15E wrote:

Just running the command posted by softwater will not switch your Mac to 64-bit mode. You must restart after setting that preference. However, I didn't think it was possible to run ML in 32-bit mode.

I thought that was clearly implied by the 'ensure your machine starts up' part of my post.

But you're quite right. It always pays to be explicit.

HI,

COMBO Updates include everything that has been updated since the first General Release of that level of the OS

So in OS X 10.8.2 you would have both the OS X 10.8.1 update stuff and the OS X 10.8.2 stuff.

"Running the COMBO" so to speak can often correct hard to trace items.

It also useful if you had a working (Apple) app before an update and "Restored" it as the Current Version via Time Machine as in most cases the app would need updating before trying to run it. Quite often for some Apple Apps their updates come in the OS Updates and they need to "match" as it were.

8:46 PM Friday; December 21, 2012

Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

 iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 Couple of iPhones and an iPad
"Limit the Logs to the Bits above Binary Images."  No, Seriously

Please startup in Safe Mode and see if you still have the problem in that account.

Mac OS X: Starting up in Safe Mode

Hi, I am no good at all this crap. I have had my mac for a few years and probably know about 10 percent of what I could be using it for. Anyway, I just updated my itunes (the software update prompt told me too...I did as commanded) and I got the very same message you did when I tried to use my itunes.

I freaked out! Anyway, after following all this mumbo jumbe you guys are trying I tried another link on apple here....someone else was having the same problem as me.

Some one suggested going to the apple site and reinstalling the itunes.

I tried it, restarted my comp and now it works a treat!

Hope this helps

Hi,

I had exactly the same problem — it wasn't working on my user but worked fine on a guest user.

Here is how I solved this:

• Booted computer in a safe mode
• Launched problematic apps
• Restarted my computer (Make sure you've ticked option "Reopen windows when logging back")

Good luck and have fun!

Let's try something a bit simpler. Open the Mac App Store and go to "Purchases". Make sure you're logged in. If you aren't, log in and install the programs that will not open for you.