No, don’t blow away your hard-drive! Not until we’ve figured out what’s going on here 
Okay, next theory: you’re getting a black screen (but visible mouse cursor) because somehow our embedded version of Chromium (that’s how we do Stonehearth’s UI) isn’t starting up correctly/at all. No real idea how or why, but let’s run with this.
If you are feeling adventuresome, try adding this to your user_settings.json file:
"logging": {
"browser" : "spam"
},
This should be as child of the top-level entry in your settings files, so your whole settings files should now look something like this:
{
"user_id" : "blah-blah-blah-blah",
"collect_analytics" : true,
"logging" : {
"browser" : "spam"
},
"renderer" : {
"enable_shadows" : true,
"msaa_samples" : 16,
"shadow_resolution" : 8192,
"enable_vsync" : false,
"enable_fullscreen" : false,
"screen_width" : 1920,
"screen_height" : 1017,
"draw_distance" : 1000,
"enable_gl_logging" : true,
"last_window_x" : 1912,
"last_window_y" : -8,
"use_fast_hilite" : true,
"enable_ssao" : true,
"last_screen_x" : 1928,
"last_screen_y" : 54
}
}
With that in place, try running the game again, and forwarding me your log file. Maybe the browser is trying to tell us something…