I am new to litestep, but I figured it out.Just use cntrl+shift+esc to end process litestep.exe if its maxed out cpu or frozen etc. and then use the run command and browse to your litestep.exe and run it again,if you really messed it up u can browse to the insall default theme and run that instead. That's how i learned to change my default theme to Obsidian 1.0 ... editing the properties of that file to change the switch :)