Package: x2go OS X client Version: 4.0.5.1 After starting the x2go client, opening a connection and logging in, the client reports a missing "xmodmap" binary. The error message is attached at the bottom. The xmodmap binary on my system is located in "/opt/X11/bin/xmodmap". The directory path was added to the $PATH variable, but unfortunately the client doesn't seem to read the $PATH variable. Due to the new "SIP" feature in the new OS X one is not allowed to write to the folders in which the client is looking for the binary (even with root privileges). I'm running OS X 10.11.4 and XQuartz 2.7.8 (xorg-server 1.16.4). Error message: "xmodmap failed to start. This likely means the binary is not available. The current search path is: /usr/bin:/bin:/usr/sbin:/sbin X2Go Client will now terminate. File a bug report as outlined on the bugs wiki page ."