Got Tiger, now Logic 7.1.1 unexpectedly quits

have you installed ?
http://www.apple.com/support/downloads/proapplications
upport31macosx104.html

Yes, "Installed Updates" confirms that I installed that in late 2005. However, I will try reinstalling that.

I decided to try going back to Logic 7.0.1, which was quite stable for me. I downloaded and launched "LogicPro701Updater.pkg"

The message it returns is:

Logic Pro Updater cannot be installed on this computer.
Logic Pro was not found in /Applications.

Hmm. I went and looked in my applications folder - yup, there it is:

Logic Pro 7.1.1
Kind: Application (PowerPC)
Size: 247.8 MB on disk
Where: /Applications

Now what?

Hey - it worked!

I tried installing the Pro Apps 3.1, and it worked!

You are wise, O immo. Thanks!