Briefcase Problem

Hello,

I'm having a problem with my briefacse. After upgrading to the beta 2 of
vista, i can no longer access and files in the briefcase. It takes quite some
time for the briefcase to open, then once it does, none of the files work.
I've tried cutting and pasting the files out of the briefcase but that just
freezes explorer. Can anyone help me please? Thanks in advace.