I was wondering what the unit of density in SP is?

Alright, thanks!

ok, I just have one more question. What is the difference between disabling a plugin from the plugin manager and extension manager? Do they both disable the loading of the disabled plugin?

Oh right, thanks. I think I probably disabled them with sketchucation toolset when I realised they didn't work when loading from usb

Hi, I'm trying to load my plugins from my usb drive for school and it works ok except for a few plugins such as sketchyphysics, align, and twilight. I've noticed that these plugins all have the extensions .rb! What does this mean? Can I just rename them to .rb to get them to work or something?