Tridion content delivery: TCDL not rendered in REL DCP

Solution 1:

I've seen the 2011 SP1 documentation mentions that the TagBundle element needs to go under the Configuration/TCDLEngine/Renderer element, however the UGC documentation seems to indicate otherwise:

In the <TCDLEngine> section, insert the following element just before the end tag:

<TagBundle Resource="ugc_renderer_bundle.xml"/>

So that's right in the TCDLEngine element and not inside a Renderer element. I'm not sure why that is and which one of the two might be a documentation defect (or if even both are valid for certain cases), but have you tried the configuration this way?