Uninstalled mongodb manually and reinstalled it then mongodb cannot be launched with this error.

gistfile1.txt

2016-02-06T18:10:44.893+0900 I CONTROL  [main] ***** SERVER RESTARTED *****
2016-02-06T18:10:44.910+0900 I CONTROL  [initandlisten] MongoDB starting : pid=46957 port=27017 dbpath=/usr/local/var/mongodb 64-bit host=P23722.local
2016-02-06T18:10:44.910+0900 I CONTROL  [initandlisten] db version v3.2.1
2016-02-06T18:10:44.910+0900 I CONTROL  [initandlisten] git version: a14d55980c2cdc565d4704a7e3ad37e4e535c1b2
2016-02-06T18:10:44.910+0900 I CONTROL  [initandlisten] allocator: system
2016-02-06T18:10:44.910+0900 I CONTROL  [initandlisten] modules: none
2016-02-06T18:10:44.910+0900 I CONTROL  [initandlisten] build environment:
2016-02-06T18:10:44.910+0900 I CONTROL  [initandlisten]     distarch: x86_64
2016-02-06T18:10:44.910+0900 I CONTROL  [initandlisten]     target_arch: x86_64
2016-02-06T18:10:44.910+0900 I CONTROL  [initandlisten] options: { config: "/usr/local/etc/mongod.conf", net: { bindIp: "127.0.0.1" }, storage: { dbPath: "/usr/local/var/mongodb" }, systemLog: { destination: "file", logAppend: true, path: "/usr/local/var/log/mongodb/mongo.log" } }
2016-02-06T18:10:44.911+0900 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=4G,session_max=20000,eviction=(threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),
2016-02-06T18:10:44.913+0900 E STORAGE  [initandlisten] WiredTiger (2) [1454749844:913596][46957:0x7fff75fbc000], file:WiredTiger.wt, connection: /usr/local/var/mongodb/WiredTiger.wt: No such file or directory
2016-02-06T18:10:44.923+0900 I -        [initandlisten] Assertion: 28595:2: No such file or directory
2016-02-06T18:10:44.923+0900 I STORAGE  [initandlisten] exception in initAndListen: 28595 2: No such file or directory, terminating
2016-02-06T18:10:44.923+0900 I CONTROL  [initandlisten] dbexit:  rc: 100

@satoryu I have the same issue, and switching to MMapv1 would not solve my problem, since I already have an existing database.

Do you, by chance, how can I convert my data?

fixed some typos in your snippet @satoryu

storage:
  dbPath: /usr/local/var/mongodb
  engine: mmapv1