I'm try to use Render Manager to clean out the contents of 2 folders called "Additional Render Files" and "Render Files in Undo Queue," but nothing happens when I check their respective spaces in the REMOVE column and click okay.
I successfully removed a bunch of render files just moments before -- do perhaps certain folders and their former render contents continue to show up with their data amounts even after they've been cleaned out? Also, does it matter what project I'm in when I perform this operation?