Prowin32 .exe errors

We went to 4.0 on Wednesday of this week and have been SWAMPED with Prowin32
errors when printing. In fact, we are having serious printing headaches
across the board. Some reports print at times but not at others, some
workstations have had NO problems with printing, and others simply will not
print at all. We have a mixture of Win95 and WinNT machines but there is no
method to the madness. Our Report builder and Crystal reports were converted
prior to 4.0 but we are still experiencing chaos!
Any help will be greatly appreciated.

Mark Wesley