Hello Dean, there are so many different ways to go with troubleshooting this. First question is: why didn't you upgrade to the latest code? I would move ahead to 10.11.02.0032 in case you are battling an old bug.
If you think it's your policy rules, you may be right. On the Policy Rules tab on your *auth* policy role, I would check the following:
- Is the "Inherit filter rules" checked at the top of the page?
- Do you have AP or Custom rules checked?
- What rules do you have in place? A screenshot would be helpful
Here is what my guest network Auth Policy looks like ... note the allow/deny and the direction (In and Out).