IKVM.Runtime.InternalException: Could not locate ikvm home path with Windows .NET framework library run as Notepad++ plugin

[martin-honnen]

I have a directory setup like shown below; nevertheless, when CSharpPluginPack.dll runs in Notepad++ as a plugin (Windows .NET framework 4.8) and works fine as long as it doesn't use IKVM classes, as soon as I try to access something compiled by IKVM I get an error :

IKVM.Runtime.InternalException: Could not locate ikvm home path.
   bei IKVM.Runtime.JVM.Properties.GetHomePath()
   bei System.Lazy`1.CreateValue()
   bei System.Lazy`1.LazyInitValue()
   bei IKVM.Runtime.JVM.Internal..cctor()
   --- Ende der internen Ausnahmestapelüberwachung ---
   bei IKVM.Runtime.JVM.Init()
   bei IKVM.Runtime.RuntimeInit.Init()
   bei .cctor()
   --- Ende der internen Ausnahmestapelüberwachung ---
   bei NppDemo.Forms.PopupDialog.button1_Click(Object sender, EventArgs e)
   bei System.Windows.Forms.Control.OnClick(EventArgs e)
   bei System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   bei System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   bei System.Windows.Forms.Control.WndProc(Message& m)
   bei System.Windows.Forms.ButtonBase.WndProc(Message& m)
   bei System.Windows.Forms.Button.WndProc(Message& m)
   bei System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

What do I need to change in my setup, what else do I need in the directory to ensure that IKVM works/is found?

PS C:\Program Files\Notepad++\plugins\CSharpPluginPack> ls

    Directory: C:\Program Files\Notepad++\plugins\CSharpPluginPack

Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
d----          31/12/2024    10:33                ikvm
d----          31/12/2024    10:33                runtimes
d----          31/12/2024    10:30                translation
-a---          31/12/2024    10:43         375296 CSharpPluginPack.dll
-a---          31/12/2024    10:20           4608 ExampleDependency.dll
-a---          29/10/2024    04:55         740864 IKVM.ByteCode.dll
-a---          31/10/2024    01:20       63088640 IKVM.Java.dll
-a---          31/10/2024    01:15        1028608 IKVM.Runtime.dll
-a---          31/10/2023    16:00          26904 Microsoft.Bcl.AsyncInterfaces.dll
-a---          31/12/2024    09:51         386048 org.apache.commons.codec.dll
-a---          31/12/2024    09:51         683520 org.apache.httpcomponents.client5.httpclient5.dll
-a---          31/12/2024    09:51         791552 org.apache.httpcomponents.core5.httpcore5.dll
-a---          31/12/2024    09:51         218112 org.apache.httpcomponents.core5.httpcore5.h2.dll
-a---          31/12/2024    09:51        1033728 org.xmlresolver.xmlresolver_data.dll
-a---          31/12/2024    09:51         237056 org.xmlresolver.xmlresolver.dll
-a---          31/12/2024    09:51        5428224 Saxon.HE.dll
-a---          31/12/2024    09:51          65536 slf4j.api.dll
-a---          19/02/2020    11:05          20856 System.Buffers.dll
-a---          08/05/2022    05:31         142240 System.Memory.dll
-a---          15/05/2018    15:29         115856 System.Numerics.Vectors.dll
-a---          23/10/2021    01:40          18024 System.Runtime.CompilerServices.Unsafe.dll
-a---          31/10/2023    16:00          79024 System.Text.Encodings.Web.dll
-a---          17/09/2024    01:15         644888 System.Text.Json.dll
-a---          19/02/2020    11:05          25984 System.Threading.Tasks.Extensions.dll
-a---          15/05/2018    15:29          25232 System.ValueTuple.dll

[wasabii]

Not totally sure how this is loaded, or set up, but I don't see the ikvm.properties file.

[martin-honnen]

Thanks, spot on, thought I had done Ctrl+A, Ctrl-C to copy everything and then Ctrl-V in the plugin directory but somehow I did not copy that ikvm.properties file.
Once added, all works fine.
Solved.