Oh you can totally finish chapter V! If you're talking about that bug with the ghost box, just download v0.6.1 (the bug didn't exist yet back then), play to the end of chapter V or VI, and then download v0.7.0 and copy your save folder into it to play all the way to chapter VII. Sorry for the hassle, but the next update should take a few weeks to finish since it not only has the bug fixes, but also a new optional questine xD
Also, thanks a lot! I'm really glad to hear you're enjoying it ^^