I did Travel to Argentina last year with my RTD.
You need to request a Visitor Visa since you are traveling with a RTD, which is a Canadian Document.
Some Countries do accept the RTD as a valid document but some others not. For example, my Daughter lives in Chile, and I couldn't travel to Chile because they did not accept the RTD as a valid document to travel. So I decided to go to Argentina and I had to go to their embassy in Montreal for the interview and to stamp the visitor visa in my RTD.
Good luck!