I'm early in my season and have allotted all of my training points and my players are complaining and becoming fatigued. I change the training points and it will not let me save it? The save button appears static and you can't click on it at all.

I tried to duplicate the issue you're experiencing, but I'm finding my training schedules are saving when I change them. I'm wondering if this is just a matter of using too many points per week?

The training points are extremely sensitive. From what I'm gathering some players can handle a higher training regimen and others can't and even then I've never had a player who can stick in the 23-25 point range the entire season. I usually don't get any complaining when I set the points to 22 or 23, if you're above that for a particular player consistently throughout the year you'll more then likely get some bitching and moaning.