I have the same problem described in the sticky post except for a few differences.
I used the software for my first tournament last month. Everything ran great. I bought the resgistration today and went to enter the registration and guess what? Ms-its white box of doom.
I have no idea how this happened but I have found a way around it. When the white box pops up, I right-click it and select refresh. The program starts running, but things are out of alignment and I get a lot of red X boxes (like on IE when a picture has an invalid path). A lot of the pop-up windows are not properly sized and I have to use the tab key to show the "OK" box so I can select it.
Bottom line is this. I can use the software, but all of the setup screens are difficult to use. Has this issue ever been resolved? Please let me know as my tournament is this Saturday and I'm worried this is suddenly going to stop working when I need it the most.