This is probably caused by something other than needing to install .net framework, otherwise you would not have been able to enter your key. Anyway, I will work on diagnosing your issue all I need is a bit more information. I need to know which version of windows you have, the language that you use for windows, and a screenshot of the crash. I cannot push an updater update through the system because your updater does not get to the point where it could update it, but if need be. I can make a hotfix patcher for you.
Probably tomorrow I am going to push an update that will expand some of the logging for the updater. I will send you a pm, or an email whichever you prefer when the update is live. Then we can work on further diagnosing the issue.
Sorry about the issues, and we should be able to diagnose and solve the problems in the next few days