Looks like you've loaded a new version of Roster

Your Version: 1.7.0
New Version: 1.7.1

Now when I click on upgrade it says:

You have already upgraded Roster
Or you have a newer version than this upgrader

It only allows me to upgrade 1.7.0, 1.7.2 doesnt show up.

Ok, what version do you have currently?
And are you trying to upgrade to 1.7.2?