I just checked 32bit and 64bit. Started the 64bit last. Then I ran TruckerMP and it didn't kick me out again. So for me it works now although everything was updated. Maybe something with the 32bit/64bit? Really didn't do anything different.
Well I got the same with EST2, it says I should download it again. I did and reinstalled but after logging in the game will load and than it says the game version is not supported logging me out again.