10.3 and problems with Flash pro

strange one for you. I installed flash pro first when filevault was off and all worked fine. On my Powerbook however when I had enabled filevault flash errored upon opening telling me that a number of files were missing and that I should reinstall. Reinstalling did no good however. What is hard to understand is that these particular files are part of the application's package folder. As I understand it filevault only effects files in your home folder. I installed 10.3.1 on my G5 yesterday and then today turned filevault back on only to find that the same problem occurs. When I turn filevault back off flash works fine. So no filevault no problems. I never encountered any problems with filevault upon first install just this with Flash.
Anyone else encountered this? Any ideas?