Press the machine's Stop button, to cancel printing, change the media type or paper size setting, then print again. When the media type is set to Photo Paper Plus Glossy II: Set the paper size to 4"x6" 10x15cm (Windows)/4 x 6 (Mac), or 5"x7" 13x18cm (Windows)/5 x 7 (Mac). When the media type is set to Glossy Photo Paper: Set the paper size to 4"x6" 10x15cm (Windows)/4 x 6 (Mac). When the media type is set to Envelope: Set the paper size to Envelope Com 10 (Windows)/Envelope #10 (Mac) or Envelope DL (Windows/Mac).