A part I was working on today began to give me some trouble. Namely when I tried to save the part Solidworks shot a 'failed to save document' message back. When I checked the folder I was trying to save to, a file was created using the correct filename however the filesize was 0 KB and wouldn't open. At the same time I noticed that this part, and just this part, has some kind of 'L' overlayed in front of symbols in the design tree such as cut extrude, tapped hole, etc.
Here you can see the 'L' symbol. Not sure if these two problems are related but a solution would be greatly appreciated!