P.S. you do not have the RSOD screen, the RSOD is totally different to that, it's just the Please insert a Playstation or Playstation 2 disc message, normally seen if you put in a pirate CD/DVD or other none PS2 game CD/DVD, with the exception of DVD Video discs and obviously PSX/PS2 original discs

is it possible that you are running a file that should be inside of an iso rather than being an iso file

a screen grab of the file/s you are running may be required (of the game not the emu)