I am a new canvas user and up to this point have had a positive experience. I have been using the module pages to provide students with files and resources. In a recent module that I created I added files the same way I did previously, but students are getting a file locked message when they try to open the files. I can't find any setting that indicates that the files are locked. When I look at the edit tab for each file, the locked box is not checked. does anyone have any ideas?