I think i know what caused the problem. I just created another world, this time as iridium, and when i made a mistake on a decision thing, i wanted to backdate. so i went to load game, and selected the previous save of the world i was currently on. when it loaded up it was stuck again. i still have no idea how to fix this.

No, all my savees from beta 1 were incompatible anyway. i used new saves. also, it just happened on another one of my worlds, and i didnt load the same save from the world like i described before. thats 3 worlds i can no longer play :C

In my only game with Beta 2 I don't get this, but I've hit a barrier with turn 242. No matter what I do ( I have two previous games from several turns before that I try different things with) when I hit the turn button on turn 241 it crashes right before giving me my turn again. This is on a huge map, all AI, settings all at default except black holes set to rare. All AI are set to genius. I've tried changing what's being built in my shipyards, on planets, etc. still crashes at this point. Time for a new game I guess.

I also seem to be having the same issue, with the turn button stuck on "Wait" without any idle ships/planets/etc.

Running a fresh game as the new playable race and occurs on Turn 231 (including after loading autosaves and prior saves)

Also, on an unrelated note, I am ready to murder U.P. with extreme prejudice.

"Oh you have 5 colony ships enroute to planets that are just a few turns away from their destination? Lets help you out with an environmental protection act and make those ships useless "

Damn hippies!!

Yar this happened to me as well, 2 different games. Hit the turn button and then nothing else happened; I can still open up colonies and stuff but the game doesn't progress and the turn button just says "waiting." Reloading/restarting doesn't help, and it happened at really random times.

I am having the same issue.  Terran game, huge map.  Hanging on "wait" on turn 118.  The game isn't frozen - I can access the menus, change planet construction ques, etc.  I cannot issue orders to ships though.  Clicking to change their movement orders just removes the pre-existing order and doesn't create a new one.

My friend and I faced the same problem playing multiplayer. For me it happened when I pushed the "End Turn" button and one of my survey ships moved automatically on spacejunk. Somehow the game thinks you are done with your turn although you aren't because you still have to close that "space junk window". And so it doesn't hand the turn over to the other player. 

This happened two times in our multiplayer game. We reloaded and moved our ships manually after that. Everything worked just fine then. 

Also been having this issue, but I have usually been able to save and reload because it was just a buggy anomalie that my surveyor ship was exploring and it got stuck on it and was unable to finish moving.

This time however, at turn ~645 all my survey ships, colony ships, scouts and constructors finished moving, the drengin race finishes moving and then sometime after A.I Sentinels (my custom race I created) finished moving and before the Yor collective start their turn, the game gets stuck in limbo. I am at war with the A.I sentinels and am at peace with all other races, and normally they attack my star bases or undefended ships but not that turn for some reason. There is a constructor within range of one of their fleets and their fleet doesn't move or try to attack which is odd. So I believe that is the case, something in the battle sequence has become bugged.

Another thing I've noticed is that the Ultra Terriforming research tech name & improvements got changed to "OmegaTerraforming_Name" all across the board

Perhapse if there was a save file editor I could edit their disposition towards me and view all of their ships in order to find where the bug is coming from.