WELL WHY WONT THIS WORK?!

[Ultrasyther]

So I will give it you all in very simple terms... I am on a mac laptop, AKA Macbook. So i cant get my Cso of Castlevania Dracula X chronicles to run. Its a legitimate copy and I own the game and all that stuff. However whenever I go to play it, after loading for a while it gives me this message : Critical Error : Index: 252, Size: 1. No Freaking idea what this means, I have googled it quite a bit and havent found anything, so any help would be appreciated, Im new to psp emulators though I've used many other emulators before so Im a little knowledgable.

My specs:

Model Name: MacBook
Model Identifier: MacBook5,2
Processor Name: Intel Core 2 Duo
Processor Speed: 2.13 GHz

Thank you in Advance