Whenever I create a link some rolling stock to a locomotive and then disconnect from my world (single player), the coupling for the locomotive and the rolling stock always comes apart upon re-logging in into my world. This only affects the first car that is directly coupled to the locomotive itself.

I also have railcraft and Buildcraft installed to compliment TC.

before (when i first create a train):

After saving and quitting to the title and logging back in (notice the coupler.):

another example:

related to #250