Parameters aren't getting passed

I have a crystal report with a sub report. It runs beautifully in Dynamics until I try to add it to a launch point. Is there something special I need to do with sub reports?

If it runs in DRM just fine, then adding to a launch point should do nothing different.  However, it is possible that parameters aren’t getting passed.  Try adding “Ask Each Time” to the Report Maintenance (Destination Tab) and see what parameters are getting passed in each case.  Chances are, the launch point isn’t passing them.  You can have the launch point actions set parameters if need be. Also, if you have duplicated a working launch point it is a good idea to review each parameter to ensure ALL aspects copied over.