>>It did help - thanks a lot! Got SQL Server 2008 R2 Developer version delivered this morning, was able to remove remnants of 4(!) various SQL Server versions from my computer. Everything is working now.
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>Just curious. Did the Server 2008 Developer version came as R2? Because some months ago I ordered it (the SQL 2008 Developer edition) specifically asking the MS person (on the phone) that I want the R2 version. But I got the version without R2. I am wondering if I got the wrong version or MS started sending the R2 version now.

I think they are sending the right version now.