In the Library on my site I have two guides for developers who need to integrate Crystal Reports into Applications:

Quick Reference to Crystal Reports in VB
Quick Reference to Crystal Reports in VB.NET

These show developers the basics of getting an application to launch and interact with a report. I have had several developers ask me why the steps wouldn’t work in their applications.  Both were using the “Express” edition of VB.NET.  According to Microsoft, the Express edition doesn’t support Crystal Reports integration (all the other editions do).  So, I have now noted this on the product page  for VB.NET and hope this saves a bit of grief for developers who struggle and wonder why their apps don’t work.