have a question. I have a K40 and I set it up and it worked fine, now all of a sudden the parallel arm will not go to the home position and the moshidraw states machine is busy. any iseals what could be wrong?
I speculate that the endstop is broken.
Have a look at the link in @donkjr post, It shows a possible solution to the problem you are having.
https://plus.google.com/u/0/113684285877323403487/posts/Qk8pe4r7hd1
@John_Stevens you also can try out this remote testing procedure that I am experimenting with.
@donkjr The Google Doc link is showing request denied need permission.
@John_Stevens You can try the software mentioned in this link. One of my K40’s has a Moshiboard which was not working correctly and this reset it. Another poster also said it fixed their board. I checked the software and it is clean.
@HalfNormal settings were wrong should work now 
@HalfNormal that seems like a serious software bug. Sort of a software lock situation which might be related to the dongle?