Error Message 1750--what does it mean?

I haven’t been able to find an index anywhere of the different error messages that Applescript displays. If anyone knows of one, please point me in the right direction! Here’s what I’m getting when I try to run a script from a CD Flash Projector that is supposed to launch Acrobat reader. It works in OSX but not in OS9. It also works in OS9 from my hard drive, but not from the CD!

“Could not run the script “getpdf.app” because of a scripting system (OSA) error.”
-1750

Can anyone help me figure out what that means?

Thanks!

Emily Waugh