whenever i try to load a galactic war battle i was in the middle of, it gets stuck on "loading replay"
Oh, I have a thought about this. Could you try installing the "UI enhancements" mod? It contains a fix that prevents replays from timing out. You can get it through PAMM. It's normally meant for replays, but it seems to use the same algorithm, so maybe it'll work.
I posted in the other thread, but I can ask here as well. Are you trying to load a saved Galactic War from the REPLAYS menu or through the Active Wars tab in Galactic War?