Currently, I am stuck on steam early access v164065. Steam has had no further updates since and the issue has only become apparent when another friend I planned to join in a server told me their version number which corresponds to the most up-to-date version at the time of this submission (5th Feb 2016). I have attempted to contact their server via steam access also but I am given the prompt to update my game which there is none. I can see no threads that have my same bug (or even come close for that matter) so I believe this incident may be a unique occurrence.
I have no idea