The Sims Medieval help

I installed it properly, put the crack in the right place, everything should be right but when I click the launcher this comes up

And I can't access any log.. help?

When I try installing Pirates and Nobles, it says Sims Medieval is corrupt and not installed properly, but I installed it perfectly well.
this is everything that happened: I downloaded, installed medieval, went to update it, but when I came to create-a-sim it said no disk, because I forgot to copy the crack. So I did that, then restarted my computer. Then I opened Medieval, and nothing happened, so I deleted everything, and downloaded again, and when I tried installing it it said the newer version was already installed, and the installer installs the first version.So I launched the game, and the log error came up. then I downloaded pirates and nobles, it said it was corrupt. I'm guessing, to fix everything, I have to uninstall medieval completely (which I don't know how) and install it again. something fucked up, I just don't know what, it's really annoying.