Does it crash when you launch the filemaker application or when you attempt to open a filemaker database file?
When I open the application.
I have found the problem. Quicktime. I tried to uninstall/remove Quicktime and the action failed.
I deleted the Quicktime directory under Program Files and the did the Uninstall/Remove again and it worked.
FileMaker would then run ok.
I installed the latest version of Quicktime again and the problem returned, and to get rid of Quicktine again I had to go through the same process, once done, FileMaker ran.