I extract all .cfg files from other's preset, and put them in a new folder under Reshade/Personal files/Presets. Like this one:
www.nexusmods.com/fallout4/mods/86/?tab=...s%2F%3Fid%3D86&pUp=1
Once I run Mediator.exe ,
"following error: "120" is invalid to "Value". "Value" should be between 'Minimum' and 'Maximum'" display in the top box; and all the settings are gone, even if I delete that preset it doesn't work at all. Only delete the Reshade folder download it again can Mediator.exe runs normally.
BTW, I also wonder how could it be possible that .cfg files in some of those reshade presets cannot be made as presets?