Before Updating to SP1
I have noticed in the beta that when you update to SP1 your software update point may stop working.
Usual rules apply with this issue, remove the role, reinstall the role and check the log files. It wasn’t until I checked the log file after the reinstall failed to get my SUP working that I noticed I was missing something.
Simply put, make sure your WSUS instance is up to date, I had to apply KB2734608 to get it working again. This was in a lab environment however I would hope you all all patching your production environments!