I'm kinda new to Armada 2. I'm playing the Federation campaign in singleplayer, and I tried capturing a Borg Nexus. I succeded, but it won't let me build a construction ship. Is there something I need to do to get it to build one?
You can't build any enemy units in most of the single player campaign because the tech trees control what can and what can't be built in each mission. Thats why you'll find that your limited to a small selection of vessels to begin with and have others added as the missions progress.
The mission I'm playing right now is the one when you're on the other side of the Transwarp gate and therer's a Nexus like right in front of it. Is there any way I can edit the mission to make it so I can build ships from the captured Nexus? It took me a while to capture it and I was pissed that I couldn't do anything with it.