One more remark: the patch to RC4-2 also overwrites config.cfg,
setting the screen-mode to 1280x800, etc.
My monitor can do only 1024x768.
Re-setting the screenmode from the option-page within the game
does not work, because the buttons are too far to the right
at 1280x800, so they are off the screen.
And in config.cfg, it is not obvious how to change it, (set gl_mode "6"),
because nowhere is a string or comment like "1280x800".