This is an unofficial patch for PhotoFiler 2.08 which adds compatibility with "high vector" ROMs. The zip file contains a single module, which you should drop into your !PhotoFilr app directory, replacing the original module (you may wish to make a backup first).
I suggest disabling "Show ArtWorks thumbnails" in PhotoFiler's choices, as ArtWorks support seems to be very unstable on current versions of RISC OS.
This patch is completely unsupported, but there is some discussion buried on the ROOL forums.
22 May 2016 version
Requires PhotoFiler 2.08