Report Server (MSSQLSERVER) cannot load the SQLPDW extension

I've got the subject error on our 64 bit SQL 2008 R2 box.  I've also got the Teradata error and used the steps in the following article to try and avoid it.

http://social.msdn.microsoft.com/Forums/en/sqlreportingservices/thread/34b2f6c4-a6a2-43bd-a349-ebab5b8d92f0?prof=required

My questions now are -

1) What is SQLPDW? 

2) Can the subject error be avoided using the same method for the Teradata error, i.e. comment out all references to SQLPDW?

Thanks,

Kevin