Imm 5257 instructions

I downloaded the form - IMM5257 from Canada immigration website and filled it, saved, took a printout, signed and scanned. While uploading I get the following error. I uploaded just the filled form without IMM 5257 (05-2005) B. Officer - Agent. IMM 5257 (05-2005) B. Les renseignements fournis sur ce formulaire sont recueillis en vertu de la Loi sur l'immigration et la protection des refugies pour etablir si IMM5476. " P.O.Box Apt/Unit Street No. Street name City/Town Country Province/State Postal code. If you answered "yes" to any of questions 3) through 7) above, you MUST fill our IMM5257 Schedule 1.