Notes 6.5 Client crashes everytime user opens meeting invitation...HELP

It seems that when an automated meeting invitation (i.e. our internal systems send the invitation, not Notes scheduler), users using Notes 6.5 can’t open or delete the document. And, if they try, Notes will crash and the NSD will run, creating a new NSD_*.txt file.

However, every other version of notes (5.0.x > 6.0.xCFn) can open the files fine. Anyone have any ideas?!?!