So... I've somehow encountered four errors. The first error is that after starting the Minocuck quest, none of the standing teleporters work. The teleporting item still works though. Completing the quest doesn't fix the error. The second and more serious error is that once Krista returns to her husband's home and once you go to their house and re-add her to the party, if you dismiss her from the party again she seems to vanish. The door to their house won't open again and Krista is nowhere to be found in the village, and sleeping for a day doesn't prompt her return. The third error is that if the evil route was completed for the quest involving the wife dying from fungus spores, then their house doesn't exit the battle sequence. A point that spawns two unidentified weapons and male armors appears in the middle of the house and the husband won't permit you to go upstairs. The message about the "door locking for the rest of the battle" generates when interacting with the item spawn point. The fourth error is that the magic spells "cure" and "dispel" target the enemy, not the allied side, and are useless as a result.
I found these errors playing the DLSite version of the game, which I purchased. It's a fun game, but the errors, particularly Krista vanishing, render it very difficult to enjoy.