TestDriven.NET is not running my SetUp methods for MbUnit

No longer an issue with recent versions of Gallio since v3.0.4. Just make sure to use the 64-bit installer.

I had this exact same issue after installing NUnit using nuget ... previously I had been using an older version of NUnit and everything had worked fine.

I think TestDriven is not compatible with the latest version of NUnit.

I've switched to using NCrunch, which is free, and compiles/runs tests in the backgound as you are coding, amongst other things. Highly recommended.

After having this problem for weeks on Vista 64, I found a post by Dave Bouwman just today, and it fixed this problem.