An exec that I run most days just crashed at or near the end of its processing. In its final work before stopping it writes data to a logfile - which worked, as did all the real processing it did before that, then uses RxMessageBox() to display a final summary message - having used the same function many times while running. On this occasion the final summary message was not displayed in a message box, but XP (Pro SP3) reported rexxhide had ended. Dr Watson files are attached, in case they help. As the exec runs most days, and this does not normally happen, I have no idea how to recreate the problem.