Originally Posted by
Frankie_Says_Relax
Are you getting any type of error message on-screen?
Have you tried downloading the game to your PS3?
If you purchased it on the PSP's PSN store you can go to your download list on your PS3's PSN store and re-download it to your PS3 HDD and then transfer it over to your PSP with a USB cable.
Also, Dragon's Lair is VERY NICE on PSP. There are a few strange graphical anomalies where on some boards it flips the screen in the very very last millisecond of a level, but other than that it's great.