Profile Hadrien Show my name on the attendees list for events I am attending: Yes The reason why you can't open your .Rp5 file is because you don't have the EXACT .Rp5 software to open that EXACT .Rp5 file extension. What could be more frustrating? Rp5 File Viewer Last activity: on 08/07/2016 Joined: on 03/07/2016 http://www.fileviewpro.com/en/file-extension-Rp5 Design quotient Earn DQ points by participating in a challenge. What are (DQ) Points? DQ points are a measure of your contributions, they correspond to how active you are in the Research, Ideas and Evaluation phases of a challenge.