When I run the Tekkit Launcher, I can click Options, and there's a pulldown menu called Select Modpack Build. Apparently I need to keep it on 2.1.0|1.1|Rec. Build, because if I try to use any of the newer builds, I can't communicate with any of the tekkit servers listed on this forum. I get the error:
Internal exception: java.net.SocketException: Connection reset
I'm guessing this means if you run a 2.1.0 server, you need a 2.1.0 client. Simple enough. What I don't get is, why is everyone running 2.1.0? We all know 2.1.0 is buggy as hell. Literally every public server I've been on either crashes every ten minutes or else has EE completely disabled. (And I mean COMPLETELY disabled, often times even if their Technic forums thread suggests otherwise. I would have thought we could at least get away with keeping Transmutation Tablets around, but nope! Apparently converting all my useless gravel into copper is a game-breaker somehow.)
Should I be encouraging my favorite EE-friendly servers to switch to 3.0.0? Is 3.0.0 REALLY more unstable than 2.1.0? Because 2.1.0 seems pretty bad, at this point.
TL;DR: See subject.
(Sorry if this is explained elsewhere. I couldn't find it.)