The apple app crash was due to iTunes can't sync those video format which not supported by them. If u hv upload diff format of videos lately, try to delete it then u can sync the photos and videos (which can support by iTunes) both at the same time with problem free.

I'm not an expert, just tat I trial an error. U mean u hv problem when u want to sync those movies into ur ipad2 ? How u do the transfer ? Drag it directly to ur movie folder or sync it into ur photos folders ?