Shakey

Thanks, that did the trick. Must have had an earlier version than 3.5

It just errors for me:- File: C:\Program Files\Paint.NET\Effects\RadiusFillCorners.dll Effect Name: RadiusFillCorners.EffectPlugin Full error message: PaintDotNet.WorkerThreadException: Worker thread threw an exception ---> System.IO.FileNotFoundException: Could not load file or assembly 'WindowsBase, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. File name: 'WindowsBase, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' at RadiusFillCorners.EffectPlugin.Render(EffectConfigToken parameters, RenderArgs dstArgs, RenderArgs srcArgs, Rectangle[] rois, Int32 startIndex, Int32 length) at PaintDotNet.Effects.BackgroundEffectRenderer.ThreadFunction() WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure logging. To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog]. --- End of inner exception stack trace --- at PaintDotNet.Effects.BackgroundEffectRenderer.Join() at PaintDotNet.Effects.BackgroundEffectRenderer.Start() at PaintDotNet.Menus.EffectMenuBase.<>c__DisplayClassb.b__8(Object sender, EventArgs e)