Hi Nacho, thanks for the quick response. I do have all four of those RTs set, but still seeing the. I dug around in some of the plugin files and found one error present in the transparency asset (not the modifier):
[SM5] (Node TextureSampleParameter2D) Param2D> Requires Texture2D
Could be part of the problem? I also tried making a super simple transparent material using the modifier and just a vector and 2 constants, but that resulted in the same.