Just tried running via the launcher thing without any mods - still does not work.
Am completely at a loss now here. Cannot get anything onto the map no matter what I click. Rest of the game works fine, just the editor won't do anything! Anyone any idea???
EDIT - figured it out myself. Found an old post from 2010 on a forum about TrackIR interfering with double click mouse function! lo and behold I have TrackIR 5 which had been running with the game earlier. I rebooted and didn't load up TrackIR, and double click now works in the editor and I can test stuff out!
So a bizarre bug with TrackIR from 2010 still not fixed? Sounds about right for this game