diff --git a/AboutPage/HTMLParser/ImageWidget_AsyncLoadOnDraw.cs b/AboutPage/HTMLParser/ImageWidget_AsyncLoadOnDraw.cs
index bcfa2ec7e..a7b6e7d67 100644
--- a/AboutPage/HTMLParser/ImageWidget_AsyncLoadOnDraw.cs
+++ b/AboutPage/HTMLParser/ImageWidget_AsyncLoadOnDraw.cs
@@ -52,6 +52,9 @@ namespace MatterHackers.MatterControl
 		bool startedLoad = false;
 		string uriToLoad;
 
+		IRecieveBlenderByte scalingBlender = new BlenderBGRA();
+		public void SetScalingBlender(IRecieveBlenderByte blender) { scalingBlender = blender; }
+
 		public ImageWidget_AsyncLoadOnDraw(ImageBuffer image, string uriToLoad)
 			: base(image)
 		{
@@ -89,7 +92,7 @@ namespace MatterHackers.MatterControl
 				// The image sampler we use is a 2x2 filter so we need to scale by a max of 1/2 if we want to get good results.
 				// So we scale as many times as we need to to get the Image to be the right size.
 				// If this were going to be a non-uniform scale we could do the x and y separatly to get better results.
-				ImageBuffer halfImage = new ImageBuffer(unScaledImage.Width / 2, unScaledImage.Height / 2, 32, new BlenderBGRA());
+				ImageBuffer halfImage = new ImageBuffer(unScaledImage.Width / 2, unScaledImage.Height / 2, 32, scalingBlender);
 				halfImage.NewGraphics2D().Render(unScaledImage, 0, 0, 0, halfImage.Width / (double)unScaledImage.Width, halfImage.Height / (double)unScaledImage.Height);
 				unScaledImage = halfImage;
 			}
diff --git a/ActionBar/PrintStatusRow.cs b/ActionBar/PrintStatusRow.cs
index 6106dd035..92731eb11 100644
--- a/ActionBar/PrintStatusRow.cs
+++ b/ActionBar/PrintStatusRow.cs
@@ -113,7 +113,10 @@ namespace MatterHackers.MatterControl.ActionBar
 
 		public override void OnClosed(EventArgs e)
 		{
-			activePrintPreviewImage.PrintItem.SlicingOutputMessage -= PrintItem_SlicingOutputMessage;
+			if (activePrintPreviewImage.PrintItem != null)
+			{
+				activePrintPreviewImage.PrintItem.SlicingOutputMessage -= PrintItem_SlicingOutputMessage;
+			}
 			if (unregisterEvents != null)
 			{
 				unregisterEvents(this, null);
diff --git a/CustomWidgets/PartThumbnailWidget.cs b/CustomWidgets/PartThumbnailWidget.cs
index e586426c0..b32b6d6ae 100644
--- a/CustomWidgets/PartThumbnailWidget.cs
+++ b/CustomWidgets/PartThumbnailWidget.cs
@@ -136,15 +136,17 @@ namespace MatterHackers.MatterControl
 			get { return printItem; }
 			set
 			{
-				if (printItem != null)
+				if (PrintItem != null)
 				{
-					printItem.FileHasChanged -= item_FileHasChanged;
+					PrintItem.FileHasChanged -= item_FileHasChanged;
 				}
+				
 				printItem = value;
+				
 				thumbNailHasBeenCreated = false;
-				if (printItem != null)
+				if (PrintItem != null)
 				{
-					printItem.FileHasChanged += item_FileHasChanged;
+					PrintItem.FileHasChanged += item_FileHasChanged;
 				}
 			}
 		}
@@ -170,9 +172,10 @@ namespace MatterHackers.MatterControl
 			{
 				unregisterEvents(this, null);
 			}
-			if (printItem != null)
+
+			if (PrintItem != null)
 			{
-				printItem.FileHasChanged -= item_FileHasChanged;
+				PrintItem.FileHasChanged -= item_FileHasChanged;
 			}
 			base.OnClosed(e);
 		}
@@ -477,12 +480,15 @@ namespace MatterHackers.MatterControl
 
 		private void OnDoneRendering()
 		{
-			string stlHashCode = this.PrintItem.FileHashCode.ToString();
-			string imageFileName = GetImageFileName(stlHashCode);
-
-			if (DoneRendering != null)
+			if (PrintItem != null)
 			{
-				DoneRendering(this, new StringEventArgs(imageFileName));
+				string stlHashCode = this.PrintItem.FileHashCode.ToString();
+				string imageFileName = GetImageFileName(stlHashCode);
+
+				if (DoneRendering != null)
+				{
+					DoneRendering(this, new StringEventArgs(imageFileName));
+				}
 			}
 		}
 
@@ -582,7 +588,7 @@ namespace MatterHackers.MatterControl
 
 		private bool SetImageFast()
 		{
-			if (this.printItem == null)
+			if (this.PrintItem == null)
 			{
 				this.thumbnailImage = new ImageBuffer(this.noThumbnailImage);
 				this.Invalidate();