Switched to Sailfish, but head is printing off the bed, not in middle.

[slippyr4]

I have never got GPX to work nor have I ever been able to get a response from the author about why it wouldn't work, most un-Linux like really.

I just import the Gcode to repG and make the X3G that way.

What platform are you using? I use it fine on my mac. There are actually a couple of forks of gpx - one from dan newman (the sailfish guy) and then a fork of that too. I use the markwal one (https://github.com/markwal/GPX) with simplify3d (i replaced the one they ship with). The main benefit of the forked one is that it removes the "bug" that limits the HBP temperature to 120 degrees (even though sailfish supports 130).

Win32, Win64 and linux x64 builds at https://github.com/markwal/GPX/releases

If you need an OSX build give me a shout