I had another go with the STMapper with some changed project settings just in case they were causing a problem.
I didn't have the project pref set to the 50 frame rate or 32bit float so I tried that just in case STMapper is frame rate sensitive or something weird like that.
Regarding details I'm not sure about, just in case it was causing the problem with the STMapper, I set the project bit rate to 32 bit and the Loader to 32 bit, is it necessary to do that?
One trait I have noticed is that if you don't have the VectorWarp loaded in the viewer and the ST maps are already present in the folder, if Generate CleanPass is activated Fusion will crash. No crash occured in any other scenario..
Unfortuately I got the same results, the ml_stMap worked perfectly, the Texture node warped correctly but with a solid black background (I assume that is why the ST mappers were created) and the STMapper didn't work. By the way is there an explanation of what all those extra setting are used for in the STMapper? I'll try out the Smart Vectors fuse next, maybe in a deathmatch with the VectorWarp and GridWarp plus trackers.
Here is a link to the latest effort, maybe someone can spot what is causing the problem with the STMapper.
https://drive.google.com/file/d/1dgBWmT ... sp=sharing