Gamerscircle-- it sounds like it might be a MKS productivity issue.
As for myself-- I don't appear to have EL installed correctly and I can't figure out why. I'm running USI Kolonization and I don't get EL UI from the Orbital Shipyard part.
I have ModuleManager.2.6.18.dll in GameData. Also the ExtraplanetaryLaunchpads folder (the one containing "Agencies" "Internals" "Parts" "Resources" "Ships" EL_MM.cfg etc.) is inside of GameData.
EL parts (mallet, stakes) are viewable in the VAB / SPH.
Toolbar is 1.7.10 and works fine for USI Kolonization, Crew Manifest, Chatterer, etc.
I appreciate any insight you can offer.
Also, it's been awhile since I used EL, but is it still true that there's a little part you have to put on your ship to flag it for an offworld build, or am I thinking of another similar mod?