Domain Cloaking Error

We're sorry, we had a problem with our web panel when you set up cloaking for your domain silverwing.retiarius.com!
Please go to the DreamHost Web Panel's Domains > Manage Domains area and click the [Edit] link next to silverwing.retiarius.com to re-configure cloaking.

Error: no domain www.silverwing.retiarius.com or silverwing.retiarius.com; if you recently set this up, please wait up to one hour.