This plugin does not work in Paint.NET 4.2.8, it results in this:
Application version: paint.net 4.2.8
System.ArgumentException: Rectangle '{X=34,Y=25,Width=2,Height=0}' cannot have a width or height equal to 0.
at System.Drawing.Bitmap.Clone(Rectangle rect, PixelFormat format)
at MyAnim.PNG.MyAnimPNG.OnSaveT(Document input, Stream output, PropertyBasedSaveConfigToken token, Surface scratchSurface, ProgressEventHandler progressCallback)
at PaintDotNet.FileType`2.OnSave(Document input, Stream output, SaveConfigToken token, Surface scratchSurface, ProgressEventHandler callback) in D:\src\pdn\src\Data\FileType`2.cs:line 39
at PaintDotNet.FileType.Save(Document input, Stream output, SaveConfigToken token, Surface scratchSurface, ProgressEventHandler callback, Boolean rememberToken) in D:\src\pdn\src\Data\FileType.cs:line 282
at PaintDotNet.Dialogs.SaveConfigDialog.<>c__DisplayClass48_0.<UpdatePreviewAsync>b__0() in D:\src\pdn\src\PaintDotNet\Dialogs\SaveConfigDialog.cs:line 602
at System.Threading.Tasks.Task.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
at PaintDotNet.Dialogs.SaveConfigDialog.<UpdatePreviewAsync>d__48.MoveNext() in D:\src\pdn\src\PaintDotNet\Dialogs\SaveConfigDialog.cs:line 629
Some admin must fix this.