Problem making target deleting addin

Developer Tools
1

Hello,

I’m having issues in making addin that deletes unused targets. I’ve done addin using this example http://developercenter.robotstudio.com/blobproxy/devcenter/RobotStudio/html/2aca5da4-6f94-43a0-9817-5f413d16f510.htm and my program is basically a copypaste of that.

When I load addin in Robotstudio I get following error:

RobotStudio .NET exception: Length cannot be less than zero.
Parameter name: length

Base exception: ArgumentOutOfRangeException
Length cannot be less than zero.
Parameter name: length
at System.String.Substring(Int32 startIndex, Int32 length)
at RobotStudio.ExtensionManagement.Addin.TryLoad()
ParamName:length

I have no idea what causes this. I’m using Robotstudio 2019.3 and RobotWare 6.10

If that error is in addin code, the line 32 would be “if (inst.Length == 0)”.
I’ve tried to change that value to < 1 but no difference.
Addin.dll and Addin.rsaddin are located in ABB/RobotStudio 2019/Bin/Addins

Our robot is used in educational purposes, so the targets pile up pretty quickly and I’d like to use this to clean things up.

2

I get the same error when i run this code:

using System;
using System.Collections.Generic;
using System.Text;

using ABB.Robotics.Math;
using ABB.Robotics.RobotStudio;
using ABB.Robotics.RobotStudio.Environment;
using ABB.Robotics.RobotStudio.Stations;

namespace RobotStudioEmptyAddin1
{
public class Class1
{
// This is the entry point which will be called when the Add-in is loaded
public static void AddinMain()
{
System.Diagnostics.Debug.WriteLine(“Hello world!”);
}
}
}

Could it be, that I’m missing some package?