Hey,
I'm having a problem with Free Documents, more specifically component files I have opened from Altium vault. There is no way of closing/removing them from the Project list. Right click close just makes it think a little and then nothing happens. The only way I have found to remove them from the project list is adding them to a active project and then closing it without saving. The only thing with this workaround is that they will be all back to haunt me when I start CS again. Now if there is a trick to closing these little buggers it would be very nice to know this. Below is also a screenshot of the files I'm talking about with the menu open. Hope there is help to this annoying problem.