Using Acrobat 11 Pro on a Windows 7 platform, I'm trying to prepare a layout for printing. One step requires performance of Crop Pages>Change Page Size. If the height is changed, an artifact appears when I print the file. It appears that a portion of the right side of the page is inserted into the middle of the right half of the page. This artifact does not appear in the print preview, nor does it happen if I print this file from a different computer. If I use a networked computer to print the same file, with the same printer, the artifact does not appear. Reinstalling the printer driver didn't help. I've attached a scan of the artifact and an image of the page as it is intended to print. The artifact also occurs if I print from Adobe Reader.