Oh no, I'm sorry!
I tried reproducing this error by downloading the Build 2 version and unzipping it on the desktop and it worked properly, but I think I have an idea:
Did you by any chance unzip or move the contents of Build 2 into a folder that had stuff from Build 1? Since I added some files and changed their names between Builds, overwriting Build 1 with Build 2 might not work properly.
See if the VN works if you unzip Build 2 into a brand new folder on your desktop. If that doesn't fix it we'll need to troubleshoot it more closely.
Sorry for the inconvenience!