Wallpaper Changer Pro wont open

[pythonis]

Wallpaper Changer Pro with CrackBerry Wallpapers - CB Editors Choice Award Winner 2010 - v3.0.11 by ShaoSoft

Updated from version 2.5 said I had a free upgrade. Upgraded to above version then after a reboot i get the following error when i try to access the changer

Ive rebooted, changed compatibility modes back and forth, deleted the app, reinstalled....nothing works.

[Shao128]

You've got the OS7 version installed. Log into your account at mobihand from your desktop and scroll down to Wallpaper Changer then you should see a link to change version. Click that and select the OS5/6 verion and you should be good to go.

[joegoblyn]

Since I bought the upgrade for the wallpaper changer when it was on sale on appworld. I had the free version, and that worked fine. But since the upgrade it doesn't work at all.

I've emailed a few times to support with no response.

Any input anyone?
I'm using
9900/7.0.0.576