Any luck? Also, (I'm new to RetroPie) what are the steps you took to get the cocktail shader? I've been looking around, but have yet to figure out how to find it, let alone get it running. Help?

@Thorr69 - Just to add to that I think the folder change was to correct a Retroarch Netplay issue and not so much of a core or RetroPie issue/change. If you're using an older version prior to 4.5 like 4.3 or 4.4 it will probably still use the old path unless your update RA then the new path will apply.