I have managed to get my mod working but it crashes when i speak to a new lord, any help? (Crash Log included)

[TheREALHayster]

IMono_MBMission::create_mission : 0.047686
Loading xml file: $BASE/Modules/Sandbox/SceneObj/battania_castle_keep_a_l2_interior/scene.xscene.
Loading xml file: $BASE/Modules/Sandbox/SceneObj/battania_castle_keep_a_l2_interior/atmosphere.xml.
[17:43:24.2471175] ----------Mission-AddTeam-Defender
[17:43:24.5759417] ----------Mission-AddTeam-Attacker
[17:43:24.5759417] ----------Mission-AddTeam-Attacker
[17:43:25.0260825]
[17:43:25.0650684]
[17:43:25.6000829]
[17:43:26.0090751] -------MissionScreen-OnActivate
Validating all resources in loading queue...
validate_all_resources_in_loading_queue finished
rglResource_manager::validate_all_resources_in_loading_queue() : 0.000017
rglFile_manager::shrink_memory: shrink 32 of 32 buffers, released 114482504 bytes
[17:43:44.9592147] --------------- Conversation Start ---------------
[17:43:45.1654313]
[17:43:48.1017044]
[17:43:48.3766906] Exception occurred inside invoke: ExecuteAction
Target type: TaleWorlds.CampaignSystem.ViewModelCollection.ConversationItemVM
Argument count: 0
Inner message: Object reference not set to an instance of an object.

 

[genrev0914]

May I know what your mod is about? what did you add, new lords new cultures??