I have done some research but can't seem to find the cause of my problem that is causing indesing to crash. The last line on the stack in the crash report says that indesign ran its protectiveShutDown(), so I posted a link to the protectiveShutdownLog file. I only seem to get the error when I try to quit indesign with multiple documents open. I am using CS5.5 on Mac OS X 10.6.8 and on PC windows 7. What is confusing is that it does NOT happen EVERY time I close indesign, only sometimes. I heavily use/test various scripts so I'm sure that has something to do with it. If I have more information on what the error is and some things that may cause it I can focus on what might produce those errors.