I downloaded and installed the FX Foundry, solely for the Roy Lichtenstein filter.... But it doesn't appear to be there? Going into the FX Foundry ->Photos ->Effects menu doesn't list it, and I've now gone through ALL of the FX Foundry submenus.... But this particular script is nowhere to be found.
Can someone help me out here?
The project has indexes and web browseable documentation. The entry for the script you want is here:
It lists its menu location as
<Image>/FX-Foundry/Photo/Effects/Roy Lichtenstein... It is present and working for me. However you don't need to download the whole pack for a single script. The page linked above lets you download it, if you are still unable find it.