I get this error in my log file when I try to join
http://pastebin.com/6LrhpxZe

This is the same as issue #301
Might want to share how did you fixed it if you know how, I thought I'd fixed it but it reappeared today and I don't know how I did it the last time.

Sorry for the late reply - Usually the client log is more helpful here. It's located in your KSP folder, KSP.log

I think I was finally able to fix it, if I can find the log i'll give it