In the past all .avi files showed both a general and summaries view in properties. When clicking properties for any .avi file, and then the summary tab, it is empty and displays a message that "summary properties are unavailable for the selected source(s) Also, when viewing the list of .avi files in explorer a column titled dimensions showed the video dimensions for all files. I still have the column, and dimensions show for .mp4 and .jpg files, but all of the .avi files are blank in this column. Anyone know what I've done to lose these properties and how to retrieve them? Thanks!