When using the content editor web part, in some cases you can receive the following message when editing the content, or saving the content: "cannot retrieve properties at this time"
This problem is caused by :
- You configure an Internet Information Services (IIS) virtual server that has an assigned IP address, and then extend that virtual server by using Windows SharePoint Services.
- You configure an IIS virtual server that has a host header name, you extend that virtual server by using Windows SharePoint Services, and then you install Web Part assemblies in the Bin folder instead of in the global assembly cache.
(http://support.microsoft.com/kb/830342)
There are some workaround described by that KB article but in some cases they are not advisable (for example when using SSL).
Another thing you can do (as described by a MS tech) is to remove the <clear /> tag in the web.config file in the ‘HttpHandlers’ section.
UPDATE: removing the tag can cause problems like an access denied page when you enter the root url (without /Pages/Default.aspx) under a non administrator user. The redirection could possibly not work anymore.