Just started it up with no issue (Win7 User). You might want to check some windows settings to see if anything is blocking input or possibly do a restart.
EDIT: I think the bounds might be off slightly in some of the corners of the GE. Sometimes it won't run all the way to the wall if loot is there. Possibly a bounds issue? Not sure 100%. W/e the case I have SO many random things because of this. Keep up the good work!