I have crerated a datawindow based on a DB2/4000 database. I have no problem accessing/retrieving/updating data when runnning application under PB dev. environment. When I generate an .exe application, I have the following message : "Select error: An error occured, yet no message was returned by the database driver". In the odbc log file i have the following error : "Error 999 (rc -1) : An error occured..." Did you experienced such a problem ? Thanks for your help.