Riak mongo load failure when using precompiled riak

gistfile1.txt

14:59:17.022 [error] Loading of /Users/ward/riak_mongo/ebin/riak_mongo.beam failed: badfile

14:59:17.024 [error] beam/beam_load.c(1365): Error loading module riak_mongo:
  use of opcode 153; this emulator supports only up to 152


14:59:17.030 [error] beam/beam_load.c(1365): Error loading module riak_mongo_bson:
  use of opcode 153; this emulator supports only up to 152


14:59:17.032 [error] Loading of /Users/ward/riak_mongo/ebin/riak_mongo_bson.beam failed: badfile

14:59:17.033 [error] Loading of /Users/ward/riak_mongo/ebin/riak_mongo_message.beam failed: badfile

14:59:17.034 [error] beam/beam_load.c(1365): Error loading module riak_mongo_message:
  use of opcode 153; this emulator supports only up to 152


14:59:17.036 [error] beam/beam_load.c(1365): Error loading module riak_mongo_protocol:
  use of opcode 153; this emulator supports only up to 152


14:59:17.037 [error] Loading of /Users/ward/riak_mongo/ebin/riak_mongo_protocol.beam failed: badfile

14:59:17.044 [error] Loading of /Users/ward/riak_mongo/ebin/riak_mongo_query.beam failed: badfile

14:59:17.047 [error] beam/beam_load.c(1365): Error loading module riak_mongo_query:
  use of opcode 153; this emulator supports only up to 152


14:59:17.050 [error] Loading of /Users/ward/riak_mongo/ebin/riak_mongo_riak.beam failed: badfile

14:59:17.051 [error] beam/beam_load.c(1365): Error loading module riak_mongo_riak:
  use of opcode 153; this emulator supports only up to 152


14:59:17.053 [error] Loading of /Users/ward/riak_mongo/ebin/riak_mongo_server.beam failed: badfile

14:59:17.054 [error] Loading of /Users/ward/riak_mongo/ebin/riak_mongo_sup.beam failed: badfile

14:59:17.055 [error] beam/beam_load.c(1365): Error loading module riak_mongo_server:
  use of opcode 153; this emulator supports only up to 152


14:59:17.059 [error] beam/beam_load.c(1365): Error loading module riak_mongo_sup:
  use of opcode 153; this emulator supports only up to 152


14:59:17.060 [error] Loading of /Users/ward/riak_mongo/ebin/riak_mongo_worker.beam failed: badfile

14:59:17.064 [error] beam/beam_load.c(1365): Error loading module riak_mongo_worker:
  use of opcode 153; this emulator supports only up to 152


14:59:17.077 [error] Loading of /Users/ward/riak_mongo/ebin/riak_mongo_worker_sup.beam failed: badfile

14:59:17.103 [error] beam/beam_load.c(1365): Error loading module riak_mongo_worker_sup:
  use of opcode 153; this emulator supports only up to 152


14:59:17.891 [info] Wait complete for service riak_kv (1 seconds)
{"init terminating in do_boot",{undef,[{riak_mongo,start,[]},{init,start_it,1},{init,start_em,1}]}}

Crash dump was written to: ./log/erl_crash.dump
init terminating in do_boot ()