Using Premiere Elements 15. When Freeze Frame is selected the software doesn't seem to recognize my installed version of Photoshop Elements 2018 (version 16) . . . wants me to download or install a new trial version of Photoshop. Of course the oposite problem exists when I open Photoshop and select Video Editor, it does not recognize that I have Premiere Elements 15 installed. They were purchased separately. Are these two versions compatible? If so, how can I link them?