It's really a little of both. I'm guessing you tried to update Tekkit, and something in the config files didn't overwrite correctly. I would really delete your .techniclauncher\tekkit folder and reinstall. Make a full backup of the folder, somewhere else on your hard drive, before doing so, just in case. Among other things, your waypoints and video options configs will reset. You can copy your waypoint files over from the backup after you reinstall (tekkit\mods\rei_minimap, I believe). I also highly recommend removing Java 6 and installing 7, 32- or 64-bit depending on your system.