In my EIAS v7 for Mac setup I wasn’t able to invoke the RPF_Shader’s parameter window by double-clicking on it.
Upon investigating the issue I have discovered that there is a name mismatch in the pair of files involved. In the Shaders folder one finds:
RPF_Saver.shl
RPF Saver.rsc (notice the lack of the underline separator)
Changing “RPF Saver.rsc” to “RPF_Saver.rsc” solves the issue.
These files are misnamed so in the very Mac .DMG inatallation disk image :(
