So I thought I would try #Simplify3d but alas, it has not been successful. First run the bed wasn’t level, so no stick. Ok fix that, notice that its reading in mm and I want inches so I switch the tickmark to inches. It nearly destroys the gantry trying to move the print head off into space. Tell it to rescale and it prints nothing. Grinds slowly to the middle of the print bed and craps a tiny ball of filament. (this is the test cube, world’s easiest object to print!) and what is up with the lack of a stop button on the main UI? You have a print button there you should have a stop button there. But no. The only thing positive out of this experience has been that it slices like a bat out of hell. That’s nice but not worth $140. I’m trying to support tools development but this is not helping 
Open up the print controls window. There is a estop button in the upper right. See the image at the bottom of this page: http://www.simplify3d.com/software/
On a side note I run all gcode through octoprint.
Its not the software its your understanding of the software. Sounds like you altered the steps to inches rather than the object you were printing
Inches. Not even once.
Heh, I get all those problems for free 
AFAICT Simplify3D provides much the same stuff as free software, except that Simplify3D get $140.
A stop button is a good idea, but requires the cooperation of the firmware and it is not always well supported.
Simplify3D does stand apart in one area - easy clean breakaway support with some control in its placement. I put up with the random crashes and other idiosyncrasies (can’t always use random perimeter start point) for the few things it does amazingly well.