FWIW I could do everything except take the guide out past two days. Another reboot with the power button did no solve it but removig and rinserting the smart card did.
Are you having problems with your 110 orbital? The Extended Program guide is only available on the 110 sat (Not sure where it is for eastern arc though).
or on your guide try 999> (the right arrow button) half the time that will make it download and you will be good to go. Extended guide is on 110 xpon 18 and 72.7 xpon 21, check your signal
I had this issue on one 622 and not on the other both on 6.21 - when i tried to acesss the next day the guide got downloaded, mad eno difference.
tried a reset (hold power down for a while) - no difference.
Did a check switch, downloaded the guide and all ok.