Hi Ed;
1) We do allot of web server calls.
=> Can you elaborate?
2) Did you change DB drivers / settings in PB 12.6?
3) Does your application have code in the DBError and Error Event in the DW, OLE, etc controls?
4) Does your application use TRY..CATCH?
5) Does your application have code in the System Error event?
6) Are there duplicate run-time DLL's deployed on the same PC (ie: MSVCRnnn.dll, MSVCPnnn.dll, ATLnnn.dll )?
Regards ... Chris