What steps will reproduce the problem?

1. Load solid.png into Image Processing Lab
2. Click "Grayscale"
3. Click "Sobel"

What is the expected output? What do you see instead?

It crashes.

What version of the product are you using?

2.2.4

Please provide any additional information below.

I use AForge's sobel filter from the ImageResizing.NET library, which is designed for server-side use. AccessViolationExceptions are really bad in that situation.

Fixed Sobel edge detector so it does not write beyond image buffer when doing intensity scaling step.

Fixed in revision 1693.

P.S. Sobel edge detector from AForge.NET framework can not crash on 32 bpp images by definition. Because it simply can not process them ... Just to clarify things.