Yeah, I had to do a reboot for the plugin to show up, but no go on the shelf. Wiping the userPrefs.mel worked, but I need to figure out what I would need to re-modify to get my preferences how I like them. At the very least, there's a whole other plugin that would need reinstallation. I may post on the Renderman forums and see if there's a better solution. Not having a shelf isn't the end of the world. I might be able to build it up manually too. Although now that I think about it, I have had problems saving things to shelves I've made myself recently. Probably there is an underlying problem with my prefs that needs fixing.