Setup new HP7520 printer. Worked great for a while. Used the scan to email function to send pictures and that worked for the first week (pictures were received in email as filename-1.jpg files) but now the attachments are coming through as filename-1.dat, which my computer has no idea what to do with. To test, I scanned a document (instead of photo) and told it to send it to me as a pdf. It came through as filename-1.dat again.
Something must have changed. I have checked the available setup options both on the printer and in the online section and can't find a solution.
If I can't fix this soon, I will take the printer back to the store as it does not perform as advertised.