Crystal Reports in a vb6 package

We created a vb6 application with several reports in it. We’ve created the reports with crystal reports 8.0 . We’ve compiled the application using the package and deployment wizard from VB. When we run the program on some machine’s we get an error using the reports : “Physical Database not found”. The other connections in VB are working fine, it’s just with the reports.
please help

Geysen Eric.