Going to reinstall from the desktop and getting a report that the file is corrupt, sounds like a problem with your hard drive, might wanna run a scan disk (especially on your programs/microsoft activesync/ folder).
As for already paying your 'freaking money', we understand completely, which is why you can always download Snails for free, after you've already purchsed it. You've got a couple ways of doing it:
Head over to http://snailsgame.com and log on or register with the members area (using your reg key that came with the game) and download to your hearts content.
Visit the retailer (e.g. Handango) and click on the 'orders' link then you can enter the email you purchased with and your billing reference number.
The above two options are by far the fastest and easiest ways to do it. If all else fails though, you can always email support@pdamill.com , and try give them as much information as possible about your purchase/copy; but don't expect a reply for several days.
Hope that helps.
