After 7 hours of compiling… hung and locked up my computer. 
Had to reset reboot.
Last messages were:
LogCookCommandlet:Display: Up to date: (path)/Output/(mod name)/WindowsNoEditor(snip)
LogCookCommandlet: Full GC…
LogCookCommandlet: Processing package (path)/Content/MAPS/THEISLANDSUBMAPS/C2_Far(snip)
Think I’ll put this game mod on the shelf again for now 