Quik Reports for Windows will not write to any Accpac or other database, so I don't believe that this is the cause of the data integrity errors you have been experiencing recently on your OE data. We have never had any reports that QRWin was the cause of data corruption, nor is there likely to be one.

You might want to make sure that you have the appropriate file locking set up on your network, or discuss any other multi-user issues (lanpaks, etc) with your systems person. More likely the problem lies there.