I'm fairly new to modding 2K games so looking at the moding FAQ thread, I found that Nba2KXModTool is a necessary tool in modding game files.
Well when I run the .jar file, it asks me to select which version of NBA2K to use. I select 2012 and hit OK but nothing happens. In Windows Manager under the Processes tab, I see multiple Java processes due to the many times I've tried to run the .jar file.
I've turned off my firewall, I'm on the Admin account. I'm all out of ideas. I'm running Windows 7 64-bit.