Will test now. The maximum rank is 25. Your save didn't work. Corrupted save.
--------------------------------------------------------------------------------
BTW here's my latest save which I spent all day on nearly completed storymode. I also added my GPD in there too on request. Download here: http://www.mediafire.com/download.php?j6js5jnr360n07t
Here's the stats from this latest save:
I'm rank 10 with nearly 200k cash