lensman said:

The number a the end of the "CrystalRuntime.Application" is a version specific number.  Why are you specifying one?  "CrystalRuntime.Application" should function on any version.

You did not specify what language you were using.  Implications are that you are using VB6.

Language is VB6

 

I have tried 'CrystalRuntime.Application' and it always uses 8.5