Does this occur in the middle of running the .exe? Please let me know if you also have an issue with this file not extracting with the most recent version.
For some reason, the displayed name staying as 'Prologue Demo' kept staying regardless of how many times it was changed until I exported it on another computer.
Along with that being fixed, the 29/06/19 version is now just an ordinary .zip - so while it's good you were able to resolve your issue with the previous archive format, hopefully this stops the issue happening to anyone else.