The picture men16.png, men16@2x and men16@3x was made with default preview application of Mac OS X. And it was scaled down from a PNG file with 512x512 pixel and a resolution of 72 DPI. All these three scaled picture has a resolution of 72 DPI. This is the information from Adobe Photoshop:
I don’t know why Xojo rescale the picture to 443 DPI. I think the first solution is that what Travis says. I removed the picture for 3x in the IDE.
This solves the problem.
But I have many applications that would build for Windows, Mac OS X and iOS. For iOS we need the picture in 3x resolution. When using my pictures from a project on OS X and iOS we must change all pictures in the IDE this is not a good solution.