Please help! Jarfile and Java Exception

[helacios]

New here and not sure if I'm posting in the right place, but I'm having an issue with jpcsp that I just can't get past.
When I try to open start-windows-amd64.bat, I get "Error: Unable to access jarfile bin/jpscp.jar".

I can't do anything to the "jpscp.jar" file without receiving the "A Java Exception has occurred" message.

So far these things are holding me back from using jpcsp, and I'm a complete noob who doesn't know where to go from here. Anything you can tell me to help?

*Operating Windows 7 Home Premium 64-bit, running jscsp 64-bit, have Java 7 update 25, jpcsp3372