These steps normally fix this problem when you accidentally type a decimal in a field that will not accept a decimal. It is a minor bug with the GUI version of MaddenCo.

1. Click on the tire icon in the upper left corner of the screen.
2. Click show emulator.
3. In the offending field hit the plus key to wipe out whatever is in the field.
4. Hit enter to accept the new blank field.
5. Close emulator and continue as normal.