EPiServer: Unknown server tag 'EPiServerUI:DynamicTable'
If you get a Unknown server tag 'EPiServerUI:DynamicTable' error when trying to access your EPiServer administration pages the most possible source would be that your web.config has different UI-paths. Check your web.config so that they are consistent (like in the example below, they all point at /mysite/UI/something):
<siteSettings ... uiUrl="~/mysite/UI/" ... />
<add virtualPath="~/mysite/UI/" ... />
<location path="mysite/ui">..</location>
<location path="mysite/ui/admin">..</location>
Most likely you'll find that some of the UI-paths points to "somewhere-else/ui/", just point it to the correct folder and hopefully your problem will be solved.
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