Fast demands gives err 500

[joel]

I have two suggestions

1. FOR TESTING ONLY: Counterintuitive but what about implementing a block so that only one connection is allowed as a time.
2. I had a similiar but not the same problem. If you app is a multi-tenanted database then you need to assign the dataset connection at runtime

Hope this helps

Also make sure your uses clause includes   IWRtlFix,