HA crashes is a known issue. I believe it is random, so it can be on one side if unlucky. I know how ppl feel when they lose due to crashes in HA. My suggestion is to take it easy and enjoy the game. If a fleet wins by crashes, cheating, spying, or illegal means, let them win. They can have the harbor all they want. Other ppl and fleets will know (it is a small community). The losing fleet can go back next week and take back the harbor. If crashes are a problem again, go back the week after. Enjoy the game by beating (or losing to) the other fleets in teamplay.
BTW, the massive crashes after winning a tile for the winning team in HA is a relatively new issue. Please fix this (if the GM is listening). Also, please fix APA.
HA is an event that many of our players are looking forward to each week.