You were probably lucky with the APpleShare thing then - I copied a couple of files from OS 9 to my 8.5 machine, and wouldn't you know it some things wouldn't work anymore - it seems one of the files I copied changed the creator and type of the AppleScript extensions. I had to change the creators back to the original ones before they worked again. That doesn't make much sense, I know. But be careful to take note of exactly what you copy over, so it makes it easier to troubleshoot if something goes wrong.
Cipher13