I expect this is something to do with antivirus blocking it for whatever reason. That happens with renpy games sometimes. Assuming the download is complete, it's all in there, and I've never heard of an error regarding "Not enough information", but who knows.
Admittedly, the game is quite big for an AVN, and if you downloaded it 5 or 6 times, that must take quite a long time with itch download speeds. Are you sure it actually finishes downloading each time?