Re-purchasing an app
I have an app on the Store (Growl, FWIW) that won't let me update. When I try, it refuses me with an error that says "To update this application, sign in to the account you used to purchase it." I've tried both of my apple IDs, and get the same message on both.
Now, the app is only $1.99, so I figured I could just uninstall it and re-purchase it. After a thorough uninstallation (following the developers' instructions fully), I went back to the app store... and it still only offers me the update, which it still refuses for the same reason.
I want to make the App Store forget I own this app, so I can pay $$ for it again. Any suggestions for how can I buy the app anew?
Thanks!
App Store-OTHER, OS X Mountain Lion