Not being able to make a custom building, etc

Hello. I’ve recently been able to purchase Stonehearth yesterday (which I’m thrilled to say), but I’ve experienced a huge bug. I tried to make a custom house, but when I moved from the Foundation to the Walls, I got an engine crash error. I closed it, and tried to undo the walls, since only one side was able to form. I kept getting more errors and I decided to delete everything I was trying to build. When I went to build a custom house again, it would not even place the foundation down. I’ve also had issues in trying to cancel tasks, such as mining, which always reappeared. I am using no mods, and I am on the latest Alpha build.