This is happening with a TV Series.
I currently have 3 episodes of CSI
They are named as follows
CSI - S09E03.avi
CSI - S09E06.avi
CSI - S09E09.avi
The issue I am seeing is when I tell (MC) to scan folders for new episodes it only brings up CSI - S09E03.avi and CSI - S09E06.avi. Now if I check the folder were the 3 episodes are sitting it does generate the nfo and tbn file for the episode. I have even tried removing all the nfo files and rescanning and it repeats the same problem. Funny thing is, it only does it with CSI. Haven't seen this with any or my other series.