Looks like you’re right–I suspect I know what the issue is, and we can verify pretty easily. If you know how to, edit your user_settings.json file, it should look like the following:
{
"user_id" : "98b39b32-3386-11e4-a06e-902b3450324f",
"renderer" : {
"disable_pinned_memory" : true,
"enable_ssao" : false,
"enable_shadows" : false,
Add that line, “disable_pinned_memory” : true, to the “renderer” block, as shown above, and then run stonehearth.