Insert Track - Highlights blue, does not insert?

[gimpymoo]

I am trying to "insert track" but this specific track goes blue (not red) and does not insert.

Any ideas?

Thanks.

[*Garfield]

I had a similar problem with this. This seemed to be happening when the map file names had strange characters like accents above letters or things like ^ or *, etc. If you edit the original file name, removing these characters, then try and add them, it should work just fine. This is what I did.