Unfortunately, DynamicObject didn’t make it into the CTP, and the version that’s in the Open Source DLR is newer than – and not compatible with – the version of the DLR that’s in the CTP.
I’ve seen a few people ask where they can get a copy of DynamicObject, but haven’t seen the actual source posted. So to rectify this situation, I’ve placed the source code here. Standard disclaimers apply.
Please enjoy being dynamic!