>>>>Could be a rights issue. Is the dll placed in a subfolder of the root web folder?
>>>
>>>Thought about it being a rights issue, but I really don't think that's it. For testing, I placed the dll in the parent folder of the web, the data it uses is in a subfolder of that web. I'll check the rights of the IUSR in that folder for grins.
>>
>>remember to reregister when moving your dll...
>
>Yeah, had that gotcha before too. I checked the rights, IUSER didn't have any rights to the data subfolder. Gave IUSER appropriate rights to the data subfolder and still don't get any results. You gotta love debugging Internet apps!

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.