Epson Stylus CX4200: Can't scan more than one page anymore

For 4 years, I have been able to scan more than one page, now "all of a sudden," I cannot. A dialog box used to come up asking me if I wanted to scan more pages. After I scanned all my pages, another screen would come up wherein I could delete pages or change the orientation. No more. I uninstalled and reinstalled the software and have updated drivers. Didn't help. Possible clue: Some on-line tech support people "fine-tuned" my computer recently. Could they have deleted a utility that the CX4200 was using? Or is there a setting for the CX4200 that I simply cannot find?