I recently just installed the pioneer 4200 in my G35 and I use my SD card to play movies. The movies was playing just fine and then a few days ago my SD card stopped detecting the movie I had on the SD card. I have one movie on the card, and before all I had to do was go to source>sd card, and the movie automatically played, now it says no data, when there clearly is because I can still hear the sounds, but no image, what is the problem?

Don't waist too much time troubleshooting. Just erase them and copy them again to the SD card.

OK I fixed it, I just had to do a hard reset and everything went back to normal. thank you.