FM Runtime App unexpectedly quits in OS 10.2

Im running an applescript to update/create records in my FM5.5 runtime app

The applescript reads a text file that contains the entries that need to be added or updated.

while the Applescript is running the runtime app "unexpectedly quits" and leaves my database corrupt. It is quiting at random spots in the text file

the weird thing is that it works completely fine in OS 10.3 and OS 9. it even works in 10.2 if the USR runtime files are run from filemaker and not the runtime.

im completely stumped...if anyone can help, it would be greatly appreciated

Thanks