I'm trying to make a custom background and icon for my PSX to PSP game. I have a picture thats 144 x 80 for the icon. My background picture that I want is 480 x 272. After editing the pictures with microsoft paint, I saved both as ICONO.PNG and PIC1.PNG . They were originally jpeg images. Then I added them into popstation and I clicked "Preview EBOOT", it shows my custom icon and background images. When I click "GO", it said "The selected ICONO.PNG file is not valid! (invalid signature)". Also said "The selected PIC1.PNG file is not valid! (invalid signature)". How do I fix this so that I could add custom images? Thanks.