Yes, I am chosen alternate outfits during ep5, loaded my last save (before coming of Mom) and get error. But then, I try to load the save from the moment of choice with who go on a date (mom/Alice/Tracy). And this save works fine with alternate outfits.
(Maybe I just got lucky)
Yeah, this is the point I started from, where my save worked, and Tracy didn't have her alternate outfit using this save (even though I picked it earlier). This is the morning scene from the previous chapter where you choose which of the three gals you'll be spending the day with (Mom/cabin, Tracy/car, Alice/something or other).
So, if you were fortunate enough to save at this point, this save will work with no issues, plus you can explore all three paths from that point. I didn't feel like it made much difference though, so apparently the more meaningful choices were earlier in the game.
Followup:
Based on some additional comments, I'd like to state that yeah, as others stated, this felt a bit too linear to me. The decisions didn't seem to have any meaningful consequences that I could see most of the time, and I felt like I was simply on a ride between sex scenes. The CG art was awesome, although I felt like you were already 'further along' at the start of this update with some of the characters than the game scenes as far as sex stuff. Particularly mom, and to a lesser extent Tracy, as I pointed out in the previous post.
The 'linear/going along for the ride' thing is probably the jist of why this update felt a little hollow/repetitive to me storyline wise. The erotic encounters just happened, you didn't have to do any additional work for them.
I still quite enjoyed the update, I'm just hoping for more meaningful choices in Episode 7 when it's released.