I am getting a popup every time I open a project now that there is unreferenced source material found, with options to recover or delete. Any idea what's causing this, and is there any way to see what material it is referring to? It has even happened on brand new projects, after I create the project on the startup screen and click go, it gives me that message. And I also can't seem to do anything to make it stop, Whether I hit recover or delete, I get the same message every time. Any help would be great, thanks.