I think Butcher himself explained to fans that the TV shows and the books weren't totally related and in ways took place in different universes. It was explained much better in the article I read. I think it may have been on wikipedia. I didn't mind Bob, I could understand the necessity for doing it that way, in fact a friend who had never read the books said Bob was his favourite character. What I did have problems with was Murphy. I didn't see why they had to turn a petite blonde cop with an Irish background into a Hispanic brunette of average height who also happened to have a young child from a previous relationship.I thought Blackthorne was great as Harry. I also wasn't thrilled about Bob, but I understood that they felt the need to have a person in the role for Blackthorne to play against, rather than just a talking skull most of the time. So instead of a spirit, he was a ghost and his backstory wasn't too bad.
What I didn't like was that not only did they rewrite the stories -- which did need to be simplified in number of plotlines for some of them -- but they also changed Harry's background and they changed the whole mythology. Instead of vampires being what they were in the series, vampires just became standard vampires, and so on. They kept the essence -- noir detective who uses magic -- which is fun, but not exactly new to t.v. or anywhere else -- and threw out most of the rest, even though it was perfectly easy to follow. So it could have been any series, really.
I still watched it, though, and thought they were getting better, but it didn't last.

