Hi, good to see an 801 substance plugin.
I've had some mixed success with it. I'm just downloading that video, haven't watched it yet, but atm .. is the only way to load a substance via the textures menu? I've tried loading via the shader tree... add layer, other substance, but there must be an issue as the substance props tag shows substance.parametersasformcontrols and you cannot load an sbsar. If you use menu, texture, substance, substance create, the props tag show load sbsar and it works (most of the time... ) I've had this crash modo using the make_it_a_parquet.sbsar and bitmap2material_2.sbsar. ie trying to see if b2m works inside modo 801. Modo has not crashed loading asphalt, wood, shutter and old painted planks sbsar's.
I've also had a few issues with the loading of substances and the mat not updating in the OGl and the f8 preview window. (I'll test a bit more before I post further on that..)
Cheers!
ps.. ok I've just seen the "report a bug" tag fly out on the browser window, do you want bugs for the beta posted there, or here?