MongoDB plugin problem

I tried to monitor MongoDB server without success.

Tue Feb 5 11:10:54 [initandlisten] connection accepted from 10.96.167.31:64142 #16 (1 connection now open)
Tue Feb 5 11:10:54 [conn16] runQuery called admin.$cmd { isMaster: 1 }
Tue Feb 5 11:10:54 [conn16] run command admin.$cmd { isMaster: 1 }
Tue Feb 5 11:10:54 [conn16] command admin.$cmd command: { isMaster: 1 } ntoreturn:1 keyUpdates:0 reslen:90 0ms
Tue Feb 5 11:10:54 [conn16] runQuery called admin.$cmd { ping: true }
Tue Feb 5 11:10:54 [conn16] run command admin.$cmd { ping: true }
Tue Feb 5 11:10:54 [conn16] command admin.$cmd command: { ping: true } ntoreturn:1 keyUpdates:0 reslen:37 0ms
Tue Feb 5 11:10:54 [conn16] runQuery called admin.$cmd { serverStatus: true }
Tue Feb 5 11:10:54 [conn16] run command admin.$cmd { serverStatus: true }
Tue Feb 5 11:10:54 [conn16] command admin.$cmd command: { serverStatus: true } ntoreturn:1 keyUpdates:0 locks(micros) r:2 reslen:1691 0ms
Tue Feb 5 11:10:54 [conn16] Socket recv() conn closed? 10.96.167.31:64142
Tue Feb 5 11:10:54 [conn16] SocketException: remote: 10.96.167.31:64142 error: 9001 socket exception [0] server [10.96.167.31:64142]
Tue Feb 5 11:10:54 [conn16] end connection 10.96.167.31:64142 (0 connections now open)

On manage engine side log file contains NullPointerException.

I tried with different mongo versions: 2.2.2, 1.8.4, 2.2.3, with the same error