Maybe, just maybe, I've solved it. Deep in the bowels of HP's web site, in a place I might never find again, there was a 10-page treatise on troubleshooting bi-directional printing problems. Some of their suggestions I had already tried. But along toward the bottom of page 4 there was a section titled "TWAIN FOLDERS". Here I found a suggestion to hunt for such, and rename any executables and/or folders I found within same; the list of offending folder names included one I recognized: PageScan. Sure enough, there was a PageScan folder in the TWAIN folder. I renamed it, rebooted, and now it appears that I can print. Whether this is a fluke or has cured the problem remains to be seen. |