I need help with Animation Editor scripts, it will not allow me to animate a custom rig. Help?

I seem to be having a hard time with animating custom rigs. I use the character creator plugin and correctly make and place joints. But the Animation Editor seems to keep rejecting my model, even though I have a "Head", "Humanoid", and a "HumanoidRootPart" along with the Humanoid Root Part being the primary part of the whole model. Yet, it seems it doesn't even work, when it does look in, I can't move any of the joints. When I try to unanchor the parts the animation editor breaks. If you could, please explain to me what I am doing wrong. Do I need to edit any scripts in any way to solve this??

Here is the error the scripts give me:

18:55:29.454 - Plugin_-1.AnimationEditorRigBuilder.AnimationEditor.Code.UtilityScripts.UtilityScriptDisplayArea:36: attempt to index local 'display' (a nil value) 18:55:29.458 - Stack Begin 18:55:29.459 - Script 'Plugin_-1.AnimationEditorRigBuilder.AnimationEditor.Code.UtilityScripts.UtilityScriptDisplayArea', Line 36 - method absoluteXPositionToTime 18:55:29.459 - Script 'Plugin_-1.AnimationEditorRigBuilder.AnimationEditor.Code.GUIScripts.GUIScriptNotchesDisplayArea', Line 35 - upvalue calculateDisplayArea 18:55:29.460 - Script 'Plugin_-1.AnimationEditorRigBuilder.AnimationEditor.Code.GUIScripts.GUIScriptNotchesDisplayArea', Line 121 - upvalue createNotches 18:55:29.460 - Script 'Plugin_-1.AnimationEditorRigBuilder.AnimationEditor.Code.GUIScripts.GUIScriptNotchesDisplayArea', Line 157 - upvalue initNotches 18:55:29.461 - Script 'Plugin_-1.AnimationEditorRigBuilder.AnimationEditor.Code.GUIScripts.GUIScriptNotchesDisplayArea', Line 168 - method init 18:55:29.461 - Script 'Plugin_-1.AnimationEditorRigBuilder.AnimationEditor.Code.UtilityScripts.UtilityScriptPluginSetup', Line 96 - upvalue initializeScripts 18:55:29.462 - Script 'Plugin_-1.AnimationEditorRigBuilder.AnimationEditor.Code.UtilityScripts.UtilityScriptPluginSetup', Line 324 - method populateEditor 18:55:29.463 - Script 'Plugin_-1.AnimationEditorRigBuilder.AnimationEditor.Code.UtilityScripts.UtilityScriptRigSelection', Line 186 - upvalue showEditor 18:55:29.463 - Script 'Plugin_-1.AnimationEditorRigBuilder.AnimationEditor.Code.UtilityScripts.UtilityScriptRigSelection', Line 199 - upvalue loadAnimatedModel 18:55:29.464 - Script 'Plugin_-1.AnimationEditorRigBuilder.AnimationEditor.Code.UtilityScripts.UtilityScriptRigSelection', Line 253 - upvalue selectRig 18:55:29.464 - Script 'Plugin_-1.AnimationEditorRigBuilder.AnimationEditor.Code.UtilityScripts.UtilityScriptRigSelection', Line 272 18:55:29.465 - Stack End