I accidentally broke line endings on gpumon when running it through git, you can fix it by running dos2unix on gpumon.
I'll fix it in the next release.
ahhhhh..... didn't see that..
quick fix is to use an editor, eg. nano
in the shell do:
then edit something (like add a line and remove it)
then hit ctr+x (to exit)
tell nano that you want to save by hitting "y"
now press alt+D to toggle between dos and linux format and hit enter...
repeat with mgpumon
now it should work again ;-)