Tempo map (BPM calculation) done wrong by Pro Tools
 

I am working in different projects using a tempo map and it's been working fine until a few days ago when the BPM calculation done by Pro Tools is completely inaccurate.

I made a video explaining the problem: https://vimeo.com/56882685

The procedure is as follows:
1. Look for the respective transient and add a marker.
2. Select two consecutive markers and press "Cmd" + i.

Please, any feedback or tip that could help me out is highly appreciated, since I need to finish this project soon.

Cheers!