[ Commerce Server ] Error Loading Editor ... CS Manager

If are you have a message "Loading Editor" that never load, when you try to edit a Profile Definition in the Commerce Server Manager, this is a commerce server error (kb 937764). To fix this issue, just add http://<ComputerName> to the trusted sites in internet explorer.

In my case http://VMRAFAVS2010. Then  reopen the Commerce Server Manager and everything just work fine.

OBS: MS have a KB for it http://support.microsoft.com/kb/937764