Make sure to select Tekkit 3.1.2 in the launcher under Manual Build Selection! We just released Tekkit 3.1.2 today so of course, we are now running it! Mostly a bunch of bug fixing. Here are some changes we implemented with 3.1.2 that you can expect to see: IC2 Machines should no longer appear sideways! IC2 crops should no longer become invisible! The donor world has been wiped! All axes should now chop down trees instantly (Yes, this took way too long to fix! Sorry!) Jetpacks are fully enabled! Tons of other little bugfixes! Enjoy guys.
*Noms Update* Yea, the IC2 crops thing was getting real annoying...I had to use my crop analyzer half of the time to see what crops I was growing... Unless they fix the issue with it circumventing current anti-PvP measures, probably not...what would you use them for anyway, when you have your trusty nano-saber?