I found that the game will encounter error and fail to respond if bonding tentacles higher than Lv20 (to activate some new scene). This happened to multiple tentacles to me (Nodder, Dolphy, Oturo, etc.)
Yea, sometimes it might be tricky though, but as long as you figure out where the save file actually is, and where it should be to be properly loaded, it shouldn't be a problem.
