Set your comp to show file extensions, and remame the files by deleting the extension (.txt). Click yes, when asked if you want to do this.

Name the file as One Of Many says, and you should be good.

The new version of Gibbs we are using defaults to a file extension that works with post-Haste, IIRC, and we have just been deleting the extensions and getting recognition from the control.

Cheers
Trev