To be honest I am not completely sure. I think its a slimmed down variant of CR9 simply because I see a CR9Deploy.reg that points to
[HKEY_LOCAL_MACHINE\SOFTWARE\Crystal Decisions\9.0\Crystal Reports]
"CommonFiles"="c:\\program files\\common files\\crystal decisions\\2.0\\bin"
Do you have any suggestions of where I can look to provide you with an answer?
Edit:
According to a colleague, it is runtime: crpe32.dll