Hi, I've had a lot of random crashes when I
1) try to draw with no tile selected for the layer
2) Do pretty much anything related to the tileset directory
3) Have the program open on the menu for too long
Just an update here. I have investigated this, reproduced your first issue, and fixed it.
However, I have not built this project for about a month and its dependencies have had hundreds, if not thousands, of changes in that time. I'm working through a lot of other issues caused by upstream dependencies and need to get through a successful QA phase before I can actually push a new build up. I'm hoping to get through it this weekend but I'll post a final update when a new build is up.
The other two issues are a little too vague to reproduce and fix. However, there may be a file called either "error.log" in your AppData/Roaming/terrascriber directory. If you're willing to email that to games at narfox.com I will see if it helps me diagnose the other issues.