I think exception errors are usually caused by scripts that are not find in the game, like:
- Lines that are changed from a version to another (save files from previous version are the most common errors, if it's the case, try to start a new game or load a not so recent save);
- A code error in the dialogue (May there be some in translated script, if you're playing v0.9.0 and it's the case, try to change the language to the default one);
- The pop up message showing too fast (There are only 15 pop up that can appear on screen, if the 16th shows up before the 1st disappears, it gets error ;u; Sorry, I should change this system in the future).
If that's something else, please, show it here so I can check the problem for you. Show the top and the bottom parts of the exception errors so I can better check it.