Hi Bart, I know this was a while ago, but I am also having issues opening up Slic3r for windows. when I click on the application, a box pops up to "run", but after clicking that, nothing happens. (without going to far into it, i tried inputing a new post-processing script in the output option to convert the .gcode to .x3g, and slic3r immediately crashed and it's never been able to open since). Iby dhupp - Slic3r