It's believed that he was, but all of the smaller teams are accountable here - by blocking Manor's entry, their prize money gets redistributed between existing teams. Which is complete madness since Manor Motorsport have always held that entry; they never gave it up, even when they were in administration.
It's possible that they could still make the grid - Caterham's administrators are still trying to sell the team, and they think that it's possible to miss a race or two. If that's true, then both Manor and Caterham could make a late start provided that they have a 2015 chassis.
Failing that, the FIA and/or FOM could overrule the teams. The FIA has indicated that they are willing to let teams under financial pressure enter with an old chassis, and Manor's entry fee - about £350,000 - has been paid, so I can't imagine that the FIA or FOM will simply shrug their shoulders.