Okay TeleKitty, I don't know the answer to this but here are some things you can try:
- Disable your anti-virus protection. The engine used to be falsely flagged as malware, but I thought they fixed it. Just in case, though.
- Open with Admin privileges (right click > properties > compatibility). In here, you can also keep changing your compatibility settings and see if any other OS works.
- Ensure you have free space available on your hard drive (engine creates a folder for save files) and that the download location is not locked as read-only (the game searches its folders for assets when booting)
- Hold the SHIFT key when booting and select a different rendering option as this may be a graphics issue
- Ensure you have memory available to run the game - close background apps, etc
Lastly, are there any error messages at all? Is there a log file generated in the game folder?