I took a look at your account and this is something that you will need to contact PayPal about. Here's a link to their contact page where you can contact them either via phone or email (links on the right):
When you talk/email with them, tell them that you're receiving a "10417 error" when you try to pay for your upgrade.
Once you hear back from them, please respond here and let us know what might have caused this issue so we can help prevent this for future users.
Let me know if you have any questions!