I had this same problem last year because i didn't install Rolen's roster right. In the end there was no spring training so i just had to scrap the league and start over. My guess is that you didn't install the roster right and you are prolly missing some files that you need. I re-installed the game into a new folder and that solved the problem.
Here the thread about my problem from last year
http://www.400softwarestudios.com/bo...&threadid=9731