[Gradient keeps crashing me]

Whenever I use effects-render-gradient it always say paint.net has an error and I have to restart it.

 

 

It keeps happening here is the report.

 

 File: C:\Program Files\Paint.NET\Effects\Vandermotten.PaintDotNetEffects.Gradient.dll

      Name: Vandermotten.PaintDotNetEffects.Gradient.GradientEffect

      Version: 3.8.0.0

      Author: Kris Vandermotten

      Copyright: Copyright © 2008-2010 Kris Vandermotten

      Website: http://users.telenet.be/krisvandermotten/Downloads/PaintDotNetEffects.html

      Full error message: PaintDotNet.WorkerThreadException: Worker thread threw an exception ---> System.MissingMethodException: Method not found: 'Boolean PaintDotNet.Effects.Effect.get_IsCancelRequested()'.

   at Vandermotten.PaintDotNetEffects.SmartEffect.OnRender(Rectangle[] renderRects, Int32 startIndex, Int32 length)

   at PaintDotNet.Effects.Effect`1.Render(Rectangle[] renderRects, Int32 startIndex, Int32 length)

   at PaintDotNet.Effects.Effect`1.Render(EffectConfigToken parameters, RenderArgs dstArgs, RenderArgs srcArgs, Rectangle[] rois, Int32 startIndex, Int32 length)

   at PaintDotNet.Effects.BackgroundEffectRenderer.ThreadFunction()

   --- End of inner exception stack trace ---

   at PaintDotNet.Effects.BackgroundEffectRenderer.Join()

   at PaintDotNet.Effects.BackgroundEffectRenderer.Abort()

   at PaintDotNet.Effects.BackgroundEffectRenderer.Start()

   at PaintDotNet.Menus.EffectMenuBase.<>c__DisplayClassb.<RunEffect>b__8(Object sender, EventArgs e)