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Those are probably older fragments. The original DE-raytracer had an Antialias setting (i.e. oversampling each pixel and smoothing the result). That had sliders for depth and radius IIRC. If you saved parameters for something that #include'ed DE-Raytracer then amongst the settings would be saved those for Antialias.

The more modern "progressive" DE-Raytracer (and a few others) don't have that setting any more. Thus running the same fragment will include a ratracer with the same name but different sliders - and thus might encounter the problem of trying to set the correct value for "Antialias" when there's no uniform with that name any more...

Hi Mikelo,

Feline is right - these messages are just harmless warnings about presets not being applied to the new script. If you want to, you can remove the corresponding entries from the '#preset Default' section.