This error log (see .7z in mediafire link) is listed with mods but can confirm this happens without mods active too.

{LINK REMOVED}http://www.mediafire.com/file/197d4v4p0ceu1dm/2016-12-20_183902.7z

Did you take over this officially on the forums too? If not it might be worth letting people know as most of the modders there are happy to help if you need it :)

whoishigh reported that the pdb may have been causing the issues. He was able to get it to run after removing the file. This was a remant file from a debug build that didn't get removed before my initial upload and will hopefully solve the issue.

I have yet to experience the crash with and without the mods loaded.

I rebuild the project with clean a clean Assemblies directory and did some additional code refactoring. Hopefully this will resolve the crashes.

so i tried adding this mod to my existing save and it took away all of my colonists heads (the textures). i unloaded the mod without saving and tried to reload my save but all their heads where still gone. i got no error message when i added it and ill try to find my mod list incase you know of one that would conflict.

ok. managed to reload to a point where my colonists have heads again but still cant re add the mod without them losing their heads over it. sadly no mine it all for this playthrough but ill add it in the next one whenever this colony meets its inevitable demize

I've never seen this happen, not to say that it couldn't. I'm not sure what could be causing this as it only adds thingdefs and designator classes for those new things (vein miner, brush, strip miner). It should really have no correlation to pawns in any way.

Would it be possible to send me a snapshot of your current mods and maybe a log file output with the mod enabled. Maybe I can recreate it.

Thanks.

The veinmining tool selects veins that are separate veins. I just clicked a vein and it jumped diagonally to a different vein and selected that, too. I think connections should be cardinal directions only, like veins are.