Thanks Marcel. I'm sad we didn't fix the problem. Very strange. I see no exotic characters in your path that might foul up the command line.
I skimmed over your MMC install scripts. I haven't tested them, but it looks like you did them correctly. I approve.
I would have built in an MMC option, but I wanted maximal simplicity for installation. Basically, you can install xshell anywhere, so long as the file $HOME/.xshell points to the correct path.
If anyone has similar problems, please let me know so we can eliminate this issue. Thanks!