Cannot start a game in versions 3.0.6a and 3.0.7 because a window stating: NOTICE: You have placed more than the alllowed number of this ship type." cannot be dismissed. It appears immediately after selecting the main board.
This issue was recognized before (Space Empires 4X - #2 by JoelCFC25), I debugged the module and found that the module was depending on undocumented behavior (i.e. a bug) that was fixed as part of enhancement.
‘someone’ was going to post an updated version of the module, but this does not appear to have happened yet.