If you are facing trouble purchasing the product then please follow these steps to update the purchase engine:
1. Copy and paste the link "http://www.esellerate.net/esellerate_update.asp"in your browser and press Enter or click 'Go'.
2. Click "Updater for Windows" to download the Updater.
3. Run the updater.
4. Try purchasing the product again.
If you still receive this error, please contact DeskShare at "http://www.deskshare.com/contact_tech.aspx" and provide us with the reported "Error Code".