Havent done a search to see if this has cropped up before but I have just found a little problem with a starbase not fighting back in the latest UDM.
The situation is I am the cardies and have a starbase. There are some friendly ships in the sector, but none of my own. The sector is attacked by five romulan warbirds.
The roms destroy the friendlies and then (eventually) the starbase, which decides not to fire throught the engagement.
If I add one cardassian vessel, then the starbase does fire and will destroy at least one warbird before the roms retreat.
So it seems to be linked to having friendly forces but none of your own ... very odd.
Other than that though, an awsome mod
C.
ps: One modification I have made (using the latest UE) is to make the obsidian order building 40% to general intelligence and not intel total (the cardies seem to lack good internal security)