@Spearhead: Yes it does. I just didn't have tk. I found in debian packages database which package contains wish and it worked. A lucky guess

Check if you have tk8.4 installed. And then run "sh /home/lasse/dosboxgui/dosboxgui.tcl" and not tclsh. It should work this way.

The same under debian unstable. loaded settings from: /home/miles/.dosbox/dosboxgui/dosboxgui.ini save settings called: /home/miles/.dosbox/dosboxgui/dosboxgui.ini using default language invalid command name "option" while executing "option add *Button.padY 0" (procedure "gui::build" line 25) …