OpenJK uses SDL as a window and input manager. A side effect of this is that on certain international keyboard formats, the original console keybind does not work correctly.
As a workaround, we have implemented SHIFT+ESC as an alternative. On standard keyboard formats, the original ` (~ key) still works - the SHIFT is no longer required for this keybind.
If you don't like this, you can adjust it with the cl_consoleKeys cvar.
OJP used standard expression:
jamp.exe +set fs_game ojpenhanced
Don't understand how this line can give a freeze (and even splash screen - how it possible? as gui like D3?).
*****************upd*********************
In fact I must find a way to debug mod's loading progress.
Usually the loading progress wrote in standard idtech console window.
Also errors and warnings wroted in .log (can't remember it name and location).
The main suspects - missing assets and/or wrong .exe/.dll.
This mod have a support. In French %)
Interesting language. A good reason to learn it.