I updated the download files on my tutorial today.
The main motivation was that I discovered a bug if you wanted to show all files and entered "false" for the row selection. Soooo the only change I made to the class was a small change in the getMax function, but when I compared the file I have been working with to the one available for download on the tutorial, it looks like I made some other tweaks that never got uploaded.
In other words, the update is for one bug fix and "miscellaneous improvements". See the tutorial for details.