Hi!
I've had the same issue, to fix it you need to open the main.exe directly and not the shortcut (in the full-extracted folder Data->main.exe)
ohhh. Thanks!
This looks like it's really cool, and I would love to play it, but even after extracting and running the main.exe file from the data folder, it still will not run. It says I don't have access to the directory. Looks cool though!
I always extract small game files like this to a folder on my desktop.