Unhandled exception upon exit problem

I am running with root 5.20/00 on windows XP. Everything worked fine until on or about July 2nd. Now when I run root from cygwin everything works but when I exit I get this error:

root [0].q
Warning in TObject::Run: handle uncaugth exception, terminating

I also have tried running projects in Visual C++ that include root and they run just fine until the end where main returns 0. At that point I get this error:

Unhandled exception at 0x00b7a205 in test2.exe: 0xC0000005: Access violation reading location 0x00000004.

Any more information you need or suggestions on what may have changed to cause this problem?