I installed the plugin like said on the devbukkit-page, I deleted the plugin folder and generated a new one, but when I use TC on a existing world, the server breaks down, as soon I get to not generated terrain. When I try to generate a new world the server crashes on startup. I used default settings. In both of the cases it creates the following error message: http://pastebin.com/LUd6LGbU

It is latest java version for your system ?

I'm not sure... I'm running the server on linux, do you know how to update java on linux?
My version is by the way 1.6.0_18

Change version to 1.6.0_26.. where was same problem in forum with this version.
Sorry dont know how do it in linux.