Problem migrating custom sales tax provider to new server

[awhc]

I finally got my custom sales tax provider class to work just fine on my local machine. But when I copied all the files over to my test server nothing works. I copied all the .dll files and web pages to the new server and everything else works, just not calculating sales tax at all. (BTW, not sure if it matters but, I'm only using the Calculate function in my custom class, not using Commit.) I added the tax provider as a new record in the sql server database, like on the local machine. As far as I can tell nothing is different except for the test server has an SSL certificate installed. I've tried using the cart in secure mode and unsecure mode, but both don't work. Can anyone tell me what I may have missed? Any other configuration changes that need to be made? I'm rapidly approaching my deadline and getting nervous. Thanks.