So I've tried uninstalling and verifying game integrity via Steam. What happens is, every time I attempt to start the mission to find the Techpriest near game-start, investigating a plague outbreak, every time I start the mission my game crashes with this error.

CoreTech2 error

Fatal error at

..\..\src\gamelogic\gamemode\gamemode_arpg.cpp(130): Map config file not found: SavingCaiusThorn_1

I've done a lot of looking around but haven't found any workarounds as yet.

Troubleshooting undertaken thus far.

Verifying game cache integrity via Steam
Complete uninstall and reinstall

If anyone knows how to get around this, I'd appreciate the assist!