Fatal error: Cannot instantiate non-existent class: polldb_s

Hi,

I have a problem with the advanced poll.

I had this poll running on a different server but i want to change the hosting to another server.

When i upload my pages and the database i have this error:

Fatal error: Cannot instantiate non-existent class: polldb_sql in C:\.......... on line 270

The difference between the servers is Fedora -> Windows 2003 both running Plesk as control Panel.

Does anyone know what's wrong?

I tried to search the forum but i didn't find the answer...

Kind regards

Tom