There seems to be some kind of problem with opening the excel version of the rosters. Unfortunately, said problem appears to be beyond my the capacity of my meager net skillz to fix. If anyone needs an Excel version of the rosters to prep for the IOD, please let me know and I'll email it to you.
You can also easily work around this problem by copying and pasting the web version of rosters into Excel. Or at least I can easily do that. Perhaps I shouldn't speak for you.