Hello Peter
I moved your post to the SAP Crystal Reports, version for Visual Studio SCN Space (just a better place for it, is all).
Anyhow, my suspicions would be:
1) There is something wrong with the data
2) The database client is different (version / configuration, etc.)
So, that leads to:
1) Please enable the option "Verify on 1st refresh", save the report and try that
2) Use Modules to compare the database client runtime / versions
Oh, BTW, what database is it you are connecting to and connection type?
- Ludek
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