What worked for me was a solution from 666reddog from this thread:
Basically just delete the “x64” folder from your stonehearth folder, mine was located here:
C:\Program Files (x86)\Steam\steamapps\common\Stonehearth
Its completely safe and the game has run for me smoothly since I tried it, it forces the game to run in 32bits though.
Hope that helps.
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