I see, you have used the Pentagon plugin to create a guide and then positioned the individual images on the corners. Assuming you have placed them correctly, you can use xod's Align object plugin.
The error went away when I changed the Line mode from SOFT to HARD. I have tried to make it crash again but I can not reproduce the error. Perhaps it was just my PC.
Just an idea using Cuboids and Wobble to achieve some distortion. I used a mask as well and Paste Alpha. You will need to experiment until you have what you want.
Where are you hosting your image? perhaps the host is changing the DPI and the size and when your printer downloads it, it is no longer the same file that you uploaded.
You need to stop judging. There is no logic in your assertions. There is no need to accuse or cry foul just because your abilities to create are not to the level of one of our all time best users of Paint.net.
@Reptillian Yes, it is an old effect that needs some refreshing. If you can recreate it may I suggest two improvements: bricks with adjustable rounded corners and an option to offset the bricks to the left or right.