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I suggest that you try loading the larger media in the manual feed slot. That may help.
Also make sure you have set the 13 x 19 as a 'Custom Size', in the printer's driver settings on the computer.
Also, that error message seems to be one from Adobe software. Are you printing a PDF file in Adobe Acrobat? if so, you might want to try printing from FoxIt Reader instead - last I heard, it was much better, and more flexible and capable, at printing PDF files.
I'm glad to hear that the problem was solved by whatever means.
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