I have just updated my version of Photoshop on my PC and on my Apple lap top. When I access Filter/Render on my lap top, I can access Flame Picture Frame Tree etc. but on my PC, Flame, Picture Frame and Tree are greyed out so that I cannot use them. Why is that?
Those filters require OpenGL functionality. If your system does not meet the minimum requirements for using OpenGL, or has driver problems that have forced OpenGL functionality to be disabled, then the filters will not be available.