InDesign's opening of the file seems to be triggered by an Apple Event -- are you using AppleScript to open this file?
Or opening it from the Finder?
What if you use File > Open from InDesign?
Does it work with another user account on the same machine?
I've been trying to open it within the indesign program and also just by double clicking the file.
When I tried File > Open from InDesign it again failed to open.
I'll try another user account and the troubleshooting suggestion.
I am having a similar problem.
I Use both apple and PC/windows computers with CS5. My apple will open Indesign documents created on the windows (XP and windows 7) computers but th ewindows XP and windows 7 computers will not open the documents crerated on the apple. Apperently there is a plugin missing but there appear to be no updates for the windows computers.
Most likely that you are NOT using CS5 on the Mac but either CS5.5 or CS6.