"Orb of Imposition" is flagged as power ID 5594 in the Character Builder character sheet. However if you look in the Compendium this ID does not exist.
Twilight Assassin power is listed (ID #9426) but the Twilight Assassin Attack at-will power that is in the character sheet as power ID 10039 does not exist in the Compendium.
Not sure why the CB would list these power IDs and then the compendium doesn't know about them. Looks like a bug in CB or missing entries in the Compendium.
Blakey
Have you reported these to Customer Support? Items posted here to the forums don't always get reported, but if you use the link inside the Compendium (circled below), you will be sure to get a response.
