Yes, I think so (I don't know which service pack you installed) :shrug:
It was http://www.microsoft.com/downloads/details.aspx?FamilyID=9b2da534-3e03-4391-8a4d-074b9f2bc1bf&displaylang=en
Although the .NET framework shouldn't effect games like OB and Morrowind as they don't use .NET and the error you have is not (directly at least) .NET related. The error looks to be related to C or C++.
I know. Although CCleaner is saying there is a problem with the .NET stuff in my registry, so it might help - but I'm surprised I'm getting a C++ error after installing the thingy a couple of pages back.
(She says like she understands
any of this.)
Sometimes it goes wonky and a reinstall can fix issues.
On the page you got the http://www.microsoft.com/downloads/details.aspx?FamilyID=9b2da534-3e03-4391-8a4d-074b9f2bc1bf&displaylang=en, scroll down to the 2005 version and try installing it. (I have 4-5 entries of 2005 in my Add/Remove.) Worth a shot.
There are two on the page - which do I want? The SP version?