Visual Basic Reference
Message queue filled; DDE message lost (Error 295)
Visual Basic can't keep up with the number of DDE operations attempted. This error has the following causes and solutions:
Too many DDE conversations are running.
Try terminating one or more DDE conversations.
Too much code in event procedures is executing because of incoming DDE data.
Reduce the amount of code being called as a result of DDE changes, or try calling the DoEvents function.