I update about once a week, and after I updated yesterday tomboy won't start. I tried from command line, and tried different start options as well. It looks like there is a DBus error of some kind. I opened a bug report on tomboy's github, but thought I might check here to see if someone with more expertise might identify where the problem is. Here is the error I get:

Code:
localhost:~> tomboy --start-here

Unhandled Exception:
System.Exception: Unable to open the system message bus. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.MethodAccessException: Method `org.freedesktop.DBus.IBusProxy:.ctor ()' is inaccessible from method `DBus.BusObject:.ctor ()'

  at (wrapper managed-to-native) System.Object:__icall_wrapper_mono_throw_method_access (intptr,intptr)
  at org.freedesktop.DBus.IBusProxy..ctor () [0x00000] in <c98ba2edce264108a47a3b2b5c274d52>:0 
  at (wrapper managed-to-native) System.Reflection.MonoCMethod:InternalInvoke (System.Reflection.MonoCMethod,object,object[],System.Exception&)
  at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00002] in <e1bc5338205147aba27a42de00cadcf8>:0 
   --- End of inner exception stack trace ---
  at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00014] in <e1bc5338205147aba27a42de00cadcf8>:0 
  at System.RuntimeType.CreateInstanceMono (System.Boolean nonPublic) [0x000a8] in <e1bc5338205147aba27a42de00cadcf8>:0 
  at System.RuntimeType.CreateInstanceSlow (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) [0x00009] in <e1bc5338205147aba27a42de00cadcf8>:0 
  at System.RuntimeType.CreateInstanceDefaultCtor (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) [0x00027] in <e1bc5338205147aba27a42de00cadcf8>:0 
  at System.Activator.CreateInstance (System.Type type, System.Boolean nonPublic) [0x00020] in <e1bc5338205147aba27a42de00cadcf8>:0 
  at System.Activator.CreateInstance (System.Type type) [0x00000] in <e1bc5338205147aba27a42de00cadcf8>:0 
  at DBus.BusObject.GetObject (DBus.Connection conn, System.String bus_name, DBus.ObjectPath object_path, System.Type declType) [0x0000d] in <e47b40adae7a48458cf9ba05c53f43ea>:0 
  at DBus.Connection.GetObject (System.Type type, System.String bus_name, DBus.ObjectPath path) [0x00018] in <e47b40adae7a48458cf9ba05c53f43ea>:0 
  at DBus.Connection.GetObject[T] (System.String bus_name, DBus.ObjectPath path) [0x00001] in <e47b40adae7a48458cf9ba05c53f43ea>:0 
  at DBus.Bus..ctor (System.String address) [0x0000f] in <e47b40adae7a48458cf9ba05c53f43ea>:0 
  at DBus.Bus.Open (System.String address) [0x0002b] in <e47b40adae7a48458cf9ba05c53f43ea>:0 
  at DBus.Bus.get_System () [0x00035] in <e47b40adae7a48458cf9ba05c53f43ea>:0 
   --- End of inner exception stack trace ---
  at DBus.Bus.get_System () [0x00052] in <e47b40adae7a48458cf9ba05c53f43ea>:0 
  at DBus.BusG.Init () [0x00010] in <77085a3dc5f44644859067a8e615d3d2>:0 
  at Tomboy.RemoteControlProxy.get_FirstInstance () [0x00011] in <41577299f12845e889e223b5379c708c>:0 
  at Tomboy.Tomboy.Main (System.String[] args) [0x00042] in <41577299f12845e889e223b5379c708c>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.Exception: Unable to open the system message bus. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.MethodAccessException: Method `org.freedesktop.DBus.IBusProxy:.ctor ()' is inaccessible from method `DBus.BusObject:.ctor ()'

  at (wrapper managed-to-native) System.Object:__icall_wrapper_mono_throw_method_access (intptr,intptr)
  at org.freedesktop.DBus.IBusProxy..ctor () [0x00000] in <c98ba2edce264108a47a3b2b5c274d52>:0 
  at (wrapper managed-to-native) System.Reflection.MonoCMethod:InternalInvoke (System.Reflection.MonoCMethod,object,object[],System.Exception&)
  at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00002] in <e1bc5338205147aba27a42de00cadcf8>:0 
   --- End of inner exception stack trace ---
  at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00014] in <e1bc5338205147aba27a42de00cadcf8>:0 
  at System.RuntimeType.CreateInstanceMono (System.Boolean nonPublic) [0x000a8] in <e1bc5338205147aba27a42de00cadcf8>:0 
  at System.RuntimeType.CreateInstanceSlow (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) [0x00009] in <e1bc5338205147aba27a42de00cadcf8>:0 
  at System.RuntimeType.CreateInstanceDefaultCtor (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) [0x00027] in <e1bc5338205147aba27a42de00cadcf8>:0 
  at System.Activator.CreateInstance (System.Type type, System.Boolean nonPublic) [0x00020] in <e1bc5338205147aba27a42de00cadcf8>:0 
  at System.Activator.CreateInstance (System.Type type) [0x00000] in <e1bc5338205147aba27a42de00cadcf8>:0 
  at DBus.BusObject.GetObject (DBus.Connection conn, System.String bus_name, DBus.ObjectPath object_path, System.Type declType) [0x0000d] in <e47b40adae7a48458cf9ba05c53f43ea>:0 
  at DBus.Connection.GetObject (System.Type type, System.String bus_name, DBus.ObjectPath path) [0x00018] in <e47b40adae7a48458cf9ba05c53f43ea>:0 
  at DBus.Connection.GetObject[T] (System.String bus_name, DBus.ObjectPath path) [0x00001] in <e47b40adae7a48458cf9ba05c53f43ea>:0 
  at DBus.Bus..ctor (System.String address) [0x0000f] in <e47b40adae7a48458cf9ba05c53f43ea>:0 
  at DBus.Bus.Open (System.String address) [0x0002b] in <e47b40adae7a48458cf9ba05c53f43ea>:0 
  at DBus.Bus.get_System () [0x00035] in <e47b40adae7a48458cf9ba05c53f43ea>:0 
   --- End of inner exception stack trace ---
  at DBus.Bus.get_System () [0x00052] in <e47b40adae7a48458cf9ba05c53f43ea>:0 
  at DBus.BusG.Init () [0x00010] in <77085a3dc5f44644859067a8e615d3d2>:0 
  at Tomboy.RemoteControlProxy.get_FirstInstance () [0x00011] in <41577299f12845e889e223b5379c708c>:0 
  at Tomboy.Tomboy.Main (System.String[] args) [0x00042] in <41577299f12845e889e223b5379c708c>:0
Thanks.