Okay.
Yeah, that was probably my issue. I didn't have wine-staging or winetricks installed.
Winetricks is installing dotnet40 now. Should work.
Edit: Hmm, still crashing. Maybe I should uninstall playonlinux?
What version of Wine are you using, anyway?
EDIT:
WOO! I finally got it to work. I had to fully remove all of the wine's I installed and try again. I got it to work with q4wine and now the launcher works fine! Hooray.
Thanks for the help. I couldn't of done it without you reminding me of winetricks and dotnet40. Expect me to be on!