I have associated a custom file type to my custom application but it crashes the application on startup when you double click the associated file type. What is crazy is this doesn't happen when the program is already running or if you pass the file information by the command line. There seems to be some random access violation occurring in a dll that has never given me any problems and that doesn't even have anything to do with the loading of the associated file type. And for a control test I took an older version of my program that doesn't open files in this manner and doesn't even take command line arguments and it crashes in the exact same manor. Anyone out there that can help?

My only suspicion (and a total stab in the dark) is your app having problems when the current working directory is not the same as the application's own directory.

Actually ben I believe your stab at the dark might be on mark about the working directory. I will inspect that thought more later tonight when I get back home. I will keep you informed if this is indeed the case.

Thanks a lot ben that was exactly the problem. That is what I get for using relative paths everywhere. [grin]