Problems with CFMX 7.0.1 Hot Fix 2 and CFCs?

My hosting provider installed Hot Fix 2 yesterday and has had a fair amount of problems. All sites that called CFCs returned a "The system has attempted to use an undefined value, which usually indicates a programming error, either in your code or some system code. Null Pointers are another name for undefined values." error. The hosting provider scrambled to roll back the hot fix upgrade. After the roll back, all sites seem to run fine.
www.xtreme-host.com