I'm wondering if someone might know the cause of a PAPER ERROR message that I'm getting when printing on my 3880 Epson printer. ???

I've read the Trouble Shooing Guide and have followed through on it's recommendations. In the past, the printer occasionally has had trouble feeding the paper, but then succeeds with a second try. But now it tries to go through the motions, but it refuses to feed under any circumstances. I've checked the paper size to make sure that's correctly specified. I've updated the driver. I've tried "flattening" the paper, so that there's no excessive curling. I've also turned off PAPER SIZE CHECK from the printer's menu.

It's an older printer; but at less than 500 pages, it's had very little use.

Does this problem ring a bell for anyone? It's got me stumped.