Leaving out the iconic music was inexcusable.
Besides a tiny bit of the intro song that was used during Kirk Fogg's intro, they failed to incorporate any of the wonderful, iconic music from the original series.
There were plenty of places to use it that would have fit but they went with generic adventure music instead.
They actually did incorporate a surprisingly large number of room and team name cameos into to the movie but they needed the music to bring it together. What a wasted opportunity...