Hi, I finally got mod_manage to load fine in FreeSWITCH on centos but now when I copied a .net dll that I built and runs on windows to the /mod/managed folder it loads fine on freeswitch startup but when try calling it (it's a AppPlugin) from the dialplan using <action application="managed" data="NameOfClass"/> I get these errors. 2010-09-01 00:21:23.303236 [ERR] switch_cpp.cpp:1177 Exception in Run(NameOfClass): System.NullReferenceException: Object reference not set to an instance of an object Server stack trace: at System.Runtime.Serialization.SerializationCallbacks.GetMethodsByAttribute (System.Type type, System.Type attr) [0x00000] in <filename unknown>:0 at System.Runtime.Serialization.SerializationCallbacks..ctor (System.Type type) [0x00000] in <filename unknown>:0 at System.Runtime.Serialization.SerializationCallbacks.GetSerializationCallbacks (System.Type t) [0x00000] in <filename unknown>:0 at System.Runtime.Serialization.SerializationObjectManager.RegisterObject (System.Object obj) [0x00000] in <filename unknown>:0 at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.GetObjectData (System.Object obj, System.Runtime.Serialization.Formatters.Binary.TypeMetadata& metadata, System.Object& data) [0x00000] in <filename unknown>:0 at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.WriteObject (System.IO.BinaryWriter writer, Int64 id, System.Object obj) [0x00000] in <filename unknown>:0 at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.WriteObjectInstance (System.IO.BinaryWriter writer, System.Object obj, Boolean isValueObject) [0x00000] in <filename unknown>:0 at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.WriteQueuedObjects (System.IO.BinaryWriter writer) [0x00000] in <filename unknown>:0 at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.WriteObjectGraph (System.IO.BinaryWriter writer, System.Object obj, System.Runtime.Remoting.Messaging.Header[] headers) [0x00000] in <filename unknown>:0 at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize (System.IO.Stream serializationStream, System.Object graph, System.Runtime.Remoting.Messaging.Header[] headers) [0x00000] in <filename unknown>:0 at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize (System.IO.Stream serializationStream, System.Object graph) [0x00000] in <filename unknown>:0 at System.Runtime.Remoting.RemotingServices.SerializeExceptionData (System.Exception ex) [0x00000] in <filename unknown>:0 Exception rethrown at [0]: at (wrapper xdomain-invoke) FreeSWITCH.AppPluginExecutor:Execute (string,intptr) at (wrapper remoting-invoke-with-check) FreeSWITCH.AppPluginExecutor:Execute (string,intptr) at FreeSWITCH.Loader.Run (System.String command, IntPtr sessionHandle) [0x00000] in <filename unknown>:0 2010-09-01 00:21:23.303236 [ERR] mod_managed.cpp:422 Application run failed for NameOfClass (unknown module or exception). Anyone have any idea what is the problem? Thanks. Yitzchok