>>grasping here, but why don't you try returning a value from the method you call in your server, and see if it makes a difference. Also, try putting a copy of your data in a virtual folder, use that data and see if makes a difference. We can then know for sure whether it is indeed a rights issue.
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>I tried returning a value from the Method with no difference. I then copied the data file from the subfolder into the parent folder where the dll is running and changed the USE statement to reflect that. Still no difference. Hmmm....

Parent? Try them in a subfolder of the webroot.