I wanted to try to manually add some plugin thumbnails because some of my plugins don't actually snap the image correctly, I have no idea why, using the normal method, they just produce a black rectangle.
So anyway, I poked around and found that S1 stores those thumbnails under
There is a folder for each plugin and inside are a few PNG files. If I place properly named PNG files there, then magically they show up on the plugin list as thumbnails, but the only problem is somehow the size of the thumbnail is getting out of wack... I end up with some kind of size problem, that I can't seem to figure out why. I wonder if anyone has any other info about this, what step am I missing to place a custom PNG in there and have it display properly. See attached image for example of what I'm getting now.