Skewed image after updating

Hello, I was burning tumblers on my rotary with my Longer Ray5 10w. All was well and looked great. Today, I upgraded to 1.7.03 and am doing a material test on a tumbler. The text is burning great, but when it gets to the little boxes, the image is skewed. This has happened before and i think I had to delete and reimport some preference files. I am not sure, but I guarantee it is not loose belts. I have done this three times now (using painters tape) and it comes out exactly the same each time - text is good and square… boxes are skewed. Please advise. Thank you.

Did you do this to see what happens?