I'm running EPiServer CMS 6.1 with .NET 4 and the PageTypeBuilder. I'm trying to get the new DynamicContentPlugIn-attribute to work but with no luck. The standard Page Property dynamic content doesn't work either. In Edit-Mode, it displays fine with the preview function, but in the real view mode all that is shown the the name of the dynamic content contorl along with two dots, i.e. same as is shown in the Edit-Mode editor. Feels like I have been trying everything.
You need to use the EPiServer Property control when rendering dynamic content, you can also use the Extensions for EPiServer CMS library which also has an extension methods that renders PropertyXhtmlString.
This is for the .aspx or .ascx file:
<EPiServer:Property runat="server" PropertyName="MyXhtmlPropertyStringProperty" />
I am still having this same issue and am using the EPiServer Property control to render the dynamic content. Is there another possible issue?