X0101 EFFECT 33 LIVE 2015-10-13 0001144204-15-058592 POS AM 0001364541 EAGLE ROCK ENERGY PARTNERS L P 333-187553 0001461804 Eagle Rock Energy Finance Corp. 333-187553-37 0001461346 EROC Production, LLC 333-187553-33 0001461332 Eagle Rock Acquisition Partnership II, L.P. 333-187553-31 0001461336 Eagle Rock Acquisition Partnership, L.P. 333-187553-30 0001461334 Eagle Rock Energy Acquisition Co. II, Inc. 333-187553-28 0001461338 Eagle Rock Energy Acquisition Co., Inc. 333-187553-27 0001534568 Eagle Rock Energy G&P Holding, Inc. 333-187553-26 0001461337 Eagle Rock Upstream Development Company, Inc. 333-187553-24 0001461335 Eagle Rock Upstream Development II, L.P. 333-187553-23 0001461333 Eagle Rock Upstream Development Co II, Inc. 333-187553-22 0001461329 Escambia Asset Co. LLC 333-187553-21 0001461330 Escambia Operating Co. LLC 333-187553-20 0001534616 Eagle Rock Mid-Continent Holding, LLC 333-187553-14 0001534571 Eagle Rock Mid-Continent Operating, LLC 333-187553-13 0001534570 Eagle Rock Mid-Continent Asset, LLC 333-187553-12 0001378413 Eagle Rock Energy GP, L.P. 333-187553-11 0001378417 Eagle Rock Energy G&P, LLC 333-187553-10