I missed this... And I just checked your records. Your licenses for Scheduler and ACP are both current! We have not processed your upgrade order of a couple of days ago. Your access to the premium sections is OK. Your ACP licence is good through 29-Sep-2011, and your license for Scheduler (now multi-observer) is good through 29-Jul-2011. I have just re-sent both licenses to you.Cannot install the ACP Beta and cannot get new licence no to work in current ACP.
The new license you got is for Scheduler, to unlock the multiple-observer capability, not for ACP. Please use the ACP license I just sent and enter it into ACP 5.1. Then you will be able to install and use ACP 6. Enter the new Scheduler license I just (re) sent into Scheduler, and you'll be able to install and use Scheduler 3.3.