When trying to use a Scanner you receive the following information in your Job0.log

19/02/2010  17:11:24: Job0: CoCreateInstance Failed
19/02/2010  17:11:24: Job0: Failed to init

The Microsoft Visual C++ 2005 Service Pack 1 Redistributable Package ATL Security Update must be installed on the machine running the system that has the scanner installed.

http://www.microsoft.com/downloads/details.aspx?familyid=766a6af7-ec73-40ff-b072-9112bab119c2&displaylang=en