OK, I see. I renamed it to repetier2 and started using repetierHost, starts and runs configuration queries for language, but a lot of the text shown is gibberish. Setting language and hitting OK starts RepetierHost, but the screen freezes and I can't do anything with it. It seems to be messing with screen graphics as it shows bits of my desktop too. The window title is Repetier-Host V2.2.4-tablet amf if that matters. I seem to get a hanging mono process that I have to kill from the command line, the window won't respond to clicking close.
I get the following error in the console, but I got that when I was running under sudo:
libpng warning: iCCP: known incorrect sRGB profile
EDIT: Restarting with repetierHost in console seems to work on the second attempt. I am not sure why the initial setup launch was all screwed up, but it seems OK now.