Hello,

I have tested writing an add-on following the instructions from the page below: https://rpgmakerunite.com/en/learn/013_eng.html#03a

When I enable the add-on, it causes the Unity Editor to become unstable and completely unresponsive. The UI elements break, making it impossible to click or continue working.

Is this a bug, or did I do something wrong? Please provide guidance.

RPG Maker Version: 1.2 Unity Version: 2021.3.28

The error:

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NullReferenceException: Object reference not set to an instance of an object   at RPGMaker.Codebase.Runtime.Addon.AddonManager.InstantiateAddons () [0x00087] in G:\unityProj2\2021LTs28_RMU2\Assets\RPGMaker\Codebase\Runtime\Addon\Service\AddonManager.cs:1931    at RPGMaker.Codebase.Runtime.Addon.AddonManager.Refresh () [0x00054] in G:\unityProj2\2021LTs28_RMU2\Assets\RPGMaker\Codebase\Runtime\Addon\Service\AddonManager.cs:240    at RPGMaker.Codebase.Editor.Common.RpgMakerEditor.InitializeOnLoad () [0x00059] in G:\unityProj2\2021LTs28_RMU2\Assets\RPGMaker\Codebase\Editor\Common\RpgMakerEditor.cs:114    at (wrapper managed-to-native) System.Reflection.RuntimeMethodInfo.InternalInvoke(System.Reflection.RuntimeMethodInfo,object,object[],System.Exception&)   at System.Reflection.RuntimeMethodInfo.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x0006a] in <6d53f1ee8ee746e4b3c819c68e33f296>:0     --- End of inner exception stack trace ---   at System.Reflection.RuntimeMethodInfo.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00083] in <6d53f1ee8ee746e4b3c819c68e33f296>:0    at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000] in <6d53f1ee8ee746e4b3c819c68e33f296>:0    at UnityEditor.EditorAssemblies.ProcessInitializeOnLoadMethodAttributes () [0x000a5] in <308d48a21a3e462ba091bd758b25b1e6>:0  UnityEditor.EditorAssemblies:ProcessInitializeOnLoadMethodAttributes ()

code:

/*:

* @addondesc Turns Self Switch ON

* @author Author

* @help Turns a particular Self Switch ON/OFF

* 

* @command SetSelfSwitchValue

*      @text Change Self Switch

*      @desc Assigns a value to Self Switch.

* 

*  @arg SelfSwitch

*      @text Self Switch

*      @desc Specify Self Switch

*      @type select

*      @option A

*      @option B

*      @option C

*      @option D

*      @default A

* 

*  @arg Value

*      @text Setting Value

*      @desc Specify Self Switch value

*      @type boolean 

*/

/*:ja

* 

*/

using System.Collections.Generic;

using RPGMaker.Codebase.CoreSystem.Knowledge.DataModel.Runtime;

using RPGMaker.Codebase.Runtime.Addon;

using RPGMaker.Codebase.Runtime.Common;

namespace RPGMaker.Codebase.Addon {

public class MyAddOnSample {

public void SetSelfSwitchValue(int selectSelfSwitch, bool selectValue){

var eventId = AddonManager.Instance.GetCurrentEventId();

var saveDataModel = DataManager.Self().GetRuntimeSaveDataModel();

var selfSwitchData = saveDataModel.selfSwitches.Find(selfSwitch => selfSwitch.id == eventId);

if (selfSwitchData == null){

selfSwitchData = new RuntimeSaveDataModel.SaveDataSelfSwitchesData();

selfSwitchData.id = eventId;

selfSwitchData.data = new List<bool>() { false, false, false, false };

saveDataModel.selfSwitches.Add(selfSwitchData);

}

selfSwitchData.data[selectSelfSwitch] = selectValue;

}

}

}