Usually this means that the model does not have any UVs set up. (The pulsing is the brush outlines) Press F3 in the lastest version it should stop since this toggles on and off the outlines.
If you go to the view menu and select 'View Warnings about this Model' it should be able to tell you if the UVs are amiss.
Models need to have properly set up UVs prior to being loaded into Tattoo so that they can be painted.
If you go to the view menu and select 'View Warnings about this Model' it should be able to tell you if the UVs are amiss.
Models need to have properly set up UVs prior to being loaded into Tattoo so that they can be painted.