Docky crash

Hello,
docky is crashing on my linux Mint 17.2 Cinnamon 64-bits (Linux 3.16.0-38-generic).

I started it in debug mode (-d)
On my terminal I see these errors, I don't know if these errors are related to the crash.
************************************************************************************

[Fatal 13:12:12.550] [GLib] Source ID 8041 was not found when attempting to remove it
[Fatal 13:12:12.550] [GLib] Source ID 8138 was not found when attempting to remove it
Cairo.Surface is leaking, programmer is missing a call to Dispose
Set MONO_CAIRO_DEBUG_DISPOSE to track allocation traces
[Fatal 13:12:12.550] [GLib] Source ID 8178 was not found when attempting to remove it
[Fatal 13:12:12.550] [GLib] Source ID 8038 was not found when attempting to remove it
[Fatal 13:12:12.550] [GLib] Source ID 8133 was not found when attempting to remove it
Cairo.Surface is leaking, programmer is missing a call to Dispose
Set MONO_CAIRO_DEBUG_DISPOSE to track allocation traces
Cairo.Surface is leaking, programmer is missing a call to Dispose
Set MONO_CAIRO_DEBUG_DISPOSE to track allocation traces
Cairo.Surface is leaking, programmer is missing a call to Dispose
Set MONO_CAIRO_DEBUG_DISPOSE to track allocation traces
[Fatal 13:12:12.550] [GLib] Source ID 8148 was not found when attempting to remove it
[Fatal 13:12:12.550] [GLib] Source ID 8164 was not found when attempting to remove it
Cairo.Surface is leaking, programmer is missing a call to Dispose
Set MONO_CAIRO_DEBUG_DISPOSE to track allocation traces
[Fatal 13:12:12.550] [GLib] Source ID 8161 was not found when attempting to remove it
[Fatal 13:12:12.550] [GLib] Source ID 8033 was not found when attempting to remove it
[Fatal 13:12:12.550] [GLib] Source ID 8045 was not found when attempting to remove it
Cairo.Surface is leaking, programmer is missing a call to Dispose
Set MONO_CAIRO_DEBUG_DISPOSE to track allocation traces
***************************************************************************************

I removed the "network manager" docklet, I had this errors:
***************************************************************************************
[Debug 13:15:53.069] [NetworkDevice] at NetworkManagerDocklet.INetworkDeviceProxy.Get (System.String interface, System.String propname) [0x00000] in <filename unknown>:0
  at NetworkManagerDocklet.NetworkDevice.get_State () [0x00000] in <filename unknown>:0
[Error 13:15:53.069] [NetworkDevice] org.freedesktop.DBus.Error.UnknownMethod: Method "Get" with signature "ss" on interface "org.freedesktop.NetworkManager.Device" doesn't exist

[Debug 13:15:53.069] [NetworkDevice] at NetworkManagerDocklet.INetworkDeviceProxy.Get (System.String interface, System.String propname) [0x00000] in <filename unknown>:0
  at NetworkManagerDocklet.NetworkDevice.get_State () [0x00000] in <filename unknown>:0
[Error 13:15:53.070] [NetworkDevice] org.freedesktop.DBus.Error.UnknownMethod: Method "Get" with signature "ss" on interface "org.freedesktop.NetworkManager.Device" doesn't exist

[Debug 13:15:53.070] [NetworkDevice] at NetworkManagerDocklet.INetworkDeviceProxy.Get (System.String interface, System.String propname) [0x00000] in <filename unknown>:0
  at NetworkManagerDocklet.NetworkDevice.get_State () [0x00000] in <filename unknown>:0
[Error 13:15:53.070] [NetworkDevice] org.freedesktop.DBus.Error.UnknownMethod: Method "Get" with signature "ss" on interface "org.freedesktop.NetworkManager.Device" doesn't exist

[Debug 13:15:53.070] [NetworkDevice] at NetworkManagerDocklet.INetworkDeviceProxy.Get (System.String interface, System.String propname) [0x00000] in <filename unknown>:0
  at NetworkManagerDocklet.NetworkDevice.get_State () [0x00000] in <filename unknown>:0
[Error 13:15:53.071] [NetworkDevice] org.freedesktop.DBus.Error.UnknownMethod: Method "Get" with signature "ss" on interface "org.freedesktop.NetworkManager.Device" doesn't exist

[Debug 13:15:53.071] [NetworkDevice] at NetworkManagerDocklet.INetworkDeviceProxy.Get (System.String interface, System.String propname) [0x00000] in <filename unknown>:0
  at NetworkManagerDocklet.NetworkDevice.get_State () [0x00000] in <filename unknown>:0
**********************************************************************************************

Thank you in advance for your help.