Apps turning into folder

try renaming it back to an app. for instance, if the app is called "Application1", and becomes a folder, try adding .app to the end of it.

Pengu
 
Do some maintainance on the system. Boot from the oS CD and run the repair for Disk and Permissions first.

After booting from the CD and the installer appears, go to the File menu to Disk utility.

I would also run "fsck";

To run fsck, you first need to start up your Mac in single-user mode. Here's how:

1. Restart your Mac.

2. Immediately press and hold the Command and "S" keys.

You'll see a bunch of text begin scrolling on your screen. In a few more seconds, you'll see the Unix command line prompt (#).

You're now in single-user mode.

Now that you're at the # prompt, here's how to run fsck:

1. Type: "fsck -y" (that's fsck-space-minus-y).

2. Press Return.

The fsck utility will blast some text onto your screen. If there's damage to your disk, you'll see a message that says:

***** FILE SYSTEM WAS MODIFIED *****

If you see this message--and this is extremely important--repeat Steps 1 and 2 again and again until that message no longer appears. It is normal to have to run fsck more than once -- the first run's repairs often uncover additional problems..

When fsck finally reports that no problems were found, and the # prompt reappears:

3. Type: "reboot" to restart,

or type "exit" to start up without rebooting.

4. Press Return.

Your Mac should proceed to start up normally to the login window or the Finder.
 
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