Adding Shareholder....

When listing shareholder information, we have 2 shareholders, my wife and I. When adding the information for the 2nd person the program is telling me there had to be a change of ownership to add a second person. This always worked in the past. It's a 50 / 50 split. If I say only one person, the program tells me my percentage is 100 % and I can't change it. I've been using Turbo Tax for Business for 8 years and this is the 1st time this is happening. HELP!!!