Crash Log:
http://pastebin.com/Gd5qdn1c

@ Rutger:
like 1. posted in the forum yesterday, Its definitely a bug!
I found out now what causes the error.
If this value is set to true, its throwing the shown errors:
VillagesEnabled: true

This stops the error imediately:
VillagesEnabled: false

So there is still a bug about the structures (villages) in the code of that TC "Inheritance version(s)".
You (or "Khoorn" or "Timethor" or who at all is working in the back at TC too at the moment...) will fix it for sure soon as usual ;-)

Thanks and bye
mysource

Hmm, cannot reproduce this issue, but from the stacktrace I think that I know what can cause it. If somebody can test whether it's actually fixed, that would be great.

Just tried out the latest build. No crashes so far. It seems to be fixed!

Thanks for testing!

... like I told yesterday here too:
http://dev.bukkit.org/bukkit-plugins/terrain-control/forum/55872-terrain-control-2-5/?post=144