Can different versions of the Microsoft .NET Framework exist on the same machine?

Yes, different versions of the Microsoft .NET Framework can exist on the same machine. In the case of multiple versions of the .NET Framework, you need to run the Crystal Ball Application Manager and directly lock Crystal Ball to the appropriate version of the .NET Framework. To access the Crystal Ball Application Manager, select Start, then All Programs, then Oracle Crystal Ball, then Application Manager (see Working with the Crystal Ball Application Manager).