@bigjohn1979 Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first

Need more info..you updated Retropie completely? What version?

I suspect you didn't update retropie and packages after upgrading perhaps.

You can type emulationstation in a terminal to see if it throws any errors.

I've been running PCSX2 for a while, it is heavily optimized for Windows and you are going to have a significant performance drop unless your machine is a beast.