I entered a Mysterious Portal on Level 6 (fungal). I cleared the area but found no exit portal anywhere, so I exited by adding -debug-flag to the launch options and pressing p to return to Level 6. I saved and quit, and removed the launch options. Now the game closes randomly as I walk around Level 6 (it doesn't seem to crash on the higher Levels). It doesn't seem to freeze or hang, it just closes like the process was ended through Task Manager. I loaded a different character with the same mods. They're on Level 3, hasn't entered a Strange Dimension yet. No crashing on that one either. EDIT: I finally got some sort of error message, from Microsoft Visual C++ Runtime Library: Runtime Error! Program: ...mapps\common\Dungeons of Dredmor\Dungeons of Dredmor.exe This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information.