Have now gone a week without ODB crashing ! Not sure which, if any, of these things helped : • Upgraded all computers to studio 4.3.2 mac, or 4.3.2.1 windows, I found a few macs that had 4.3.1 • In the destruct procedure of the startup task, I put a “close datafile” command. Lets hope we can go another week ! Bill Steer Pioneer CEP