Multiple Issues - Progress Lost

Last night I finished Episode 3, and then quit out on the credits. About 10 minutes later I felt like playing again, so I went in, and it said I was up to Episode 3. I clicked play, and it was right at the end of it. Finished it up, watched the credits and Episode 4 started up, and then froze. Restarted the game and all my progress from Episode 3 was gone.

My only option, other than replaying Episode 3 again, was to start up Episode 4 without my decisions, so that's what I did. Played until I got into the sewers and went to bed. Now when I start up, all progress I did last night was lost. It thinks I am still up to Episode 3's beginning. Any options here, or am I out of luck? This is enough for me to never finish this game :\
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