I'm having the same problem.  I tried using the CrystalReports.RecordsSelected
property but this apparently is given it's value after (or during) printing.
It is normally set to -1 (I tried to use an If RecordsSelected=-1) but is given
the value of 0 so My code ended up causing all prints to fail.

I know this doesn't help but just wanted to say this is a problem more than one
person is having
Regards,
Joe Nizolak

"The scientific name for an animal that doesn't either run from or fight
its enemies is lunch."  -- Michael Friedman