There's a small new update for Hegemony Gold out today. The main purpose was to remove the old (pre-Steam) registration system, but while we were in there we also fixed a crash related to Steam Controllers and enabled cloud saves for those of you gaming on multiple machines.
Let us know if you run into any problems (e-mail [email protected]), and if you need the old version for any reason it's available in the Betas tab under 1.5.7 Legacy Release.