Well , i could not replicate the infinite enemy turn bug , but i came across a sudden halt on my play a few hours later. I just finished an alien base assault and when i come back the game crashes after a few in game minutes. There are 2 fighter groups hunting UFO's , so at first i thought it was caused by shooting down a landing ship i was in persuit off , but even recalling all fighters makes the game CTD , so im oblivious whats causing the crash.
Here is the save: Save
Edit : I also encountered the CTD on clicking the soldier equipment screen , but it wasnt a major issue for me.