kerbetualmotion

I've spent hours researching an 'interesting' problem where the CC-R2 connector only shows up in Sandbox mode. If you unlocked the CC-R2 from the Tech tree, could you please tell me which node it's in? I can't get this part into my career game, or find it in the tech tree, regardless of whether I start a new career and whether I delete all mods besides KIS/KAS

I'm having what appears to be a bad interaction between DSD and one of my other mods. The stock mobile lab (the one with MPL in the name) is reduced to one seat (crew capacity=1) with DSD installed, however the lab cannot be used for anything because it requires two crew members. Starting the lab shows the 'Not Enough Crew (1/2)' error. It is impossible to move any experiment data into the lab (the lab icon is shown but the text under it has three hyphens "---". It doesn't help if the total number of kerbals on the ship is equal to two. If I can figure out which other mod was causing this, I'll mention it here. I have a few dozen installed O.o Update: It is the SETI Rebalance Mod