Hi
while emqttd running emqttd start, if want to enter emqttd console crash_dump generated:

Slogan: Kernel pid terminated (application_controller) ({application_start_failure,kernel,{{shutdown,{failed_to_start_child,net_sup,{shutdown,{failed_to_start_child,net_kernel,{'EXIT',nodistribution}}}}}

also when enter erl in .../emqttd-1.1.3/erts-7.3/bin

{(no error logger present)" ienrirto rt: e<r0m.i2n.a0t>i
ng in do_boot",{badarg,[{erl_prim_loader,check_file_result,3,[{file,"erl_prim_lo
ader.erl"},{line,302}]},{init,get_boot,1,[{file,"init.erl"},{line,790}]},{init,g
et_boot,2,[{file,"init.erl"},{line,777}]},{init,do_boot,3,[{file,"init.erl"},{li
ne,744}]}]}}

Crash dump is being written to: erl_crash.dump...done
init terminating in do_boot ()

How i can access observer:start(). while emqttd running?

and when enter emqttd console without enter emqttd start before it (Console alone):

observer:start().
** exception error: undefined function wx_object:start/3
in function observer_wx:start/0 (observer_wx.erl, line 72)

Solved:
need to Copy wx-1.6.1 from .../erlang_installed_dir/lib to lib folder of emqttd.

Still not working .
Any help?