I recently installed Tmux and became really glad for it. All of a sudden I though it would start throwing an error when I try to create a new session from within my terminal:

tmux new -s my-session

will cause the application to crash and only return

[exited]

and put the following on the next command line:

62;9;c

Being new to Tmux I have no idea how to fix this issue. Does anybody recognize this error and knows how to fix it?