Solution: Close erwin r8, run Regedit, and rename the folder for r8 at
HKEY_CURRENT_USER\Software\CA\ERwin Data Modeler\
and restart ERwin r8. Crystal Reports Developer may now be launched from the ERwin toolbar.
This document includes instructions that may require editing your Registry.
Improper use of the Registry Editor can cause irreversible damage to your system!
If you are not familiar with—and completely comfortable with—the use of the Registry Editor,
please seek assistance from your local IT support or contact erwin Technical Support for assistance.