I installed tmux using homebrew on Mac OSX Lion a while back. Suddenly the keybindings have stopped working. For example if I try Ctrl-b then c (Create new window) it just types c in the terminal window. How can I fix this and make tmux useable again?
Depending on your situation, "kill-server" might be overkill.
For me, the non working keys is fixed by just detaching the client that stopped working, and re attaching to it; in a different terminal: