I ran into the same problem as the author of this post: http://www.grasshopper3d.com/forum/topics/how-to-define-per-gha-loading-mechanism
Somewhere on the second page you said:
Ah indeed. With _GrasshopperDeveloperSettings Memory Load option enabled and the load mechanism set to Plugin Default, the plugin doesn’t win. That’s clearly a bug.
I wonder if this ever got solved? I think I see the same: I define the assembly attribute
but Grasshopper only loads direct if the option is switched off in the developer settings. Before digging deeper, let me know if this problem has been solved or not. Thx!