Hello,

On the page: http://fedoraproject.org/wiki/FedUp#How_Can_I_Upgrade_My_System_with_FedUp.3F

Near the bottom of the page, it gives the command:
yum distribution-synchronization --disablepresto

This appears to be a typo and I believe it should be:
yum distribution-synchronization --disableplugin=presto