I had the same error recently at a customer site. I had just upgraded the system to 6.3 SP7 and installed the new version of SAD and DB programmer. It happened on two different PC's at the same customer. I have not been back to check it again. I thought it was the Microsoft Access Database Engine because I always have to reload the App at this particular customer, however that did not fix it so I have been trying to find a solution. If anyone else has experienced this and has a solution I would greatly appreciate your input.