Make sure you have macros enabled; otherwise the schedule genrator will not work. I also used an older version of Excel to open it; using Office 2007 under WIndows 8.
I am in the same boat as some others, can't get Houston in the AL on MVP12 with these rosters. The default rosters work fine after the team.dat file is updated as indcated on other posts, Houston is in the AL West, but as soon as I load this roster set they are back in the NL. I am on Windows 8 so I do not have the VirtualStore folder under C:Users. I had to reinstall MVP 2005 on this new machien, but I just copied the MVP12 folders from another machine. Perhaps I need to reinstall MVP12 completely. Any ideas?