So I've just recently gotten plexus, and when I set up a basic path, nothing shows up.
I've created a black solid, and used plexus as an effect on the solid. All I do is select the path option, grab the star mask (as shown in the tutorial) and create a mask. The problem is here, unlike in the video where he has the plexus actually show up inside the mask, it does not show up for me. I'm just creating a normal mask as if plexus wasn't even there.
I've check my ram allocation for the openGL and it's at 400 mb. I've looked pretty hard for an solution and I just can't seem to find one.
I've had a similar issue. I create a path and add "points on each mask" but nothing appears. I finally found that the points were being created in the distance, floating off the comp boundaries. I used the "Offset" settings of the Plexus Points Renderer module to correct this floating target, similar to the way you can edit the Anchor Point of a layer in AE. But later, when I added a Lines Renderer module, the lines were floating off in that same spot, and I couldn't get them to sync up with the points until I removed the "Offset" settings I changed. Any chance that's your problem too?