[TxMt] Impossible to delete references to files in a project

Hello:)

I'm with Leopard 10.5.1 and TextMate 1.5.7 (1436).

I created a latex project : i dropped some files .sty and a folder with subfolders in the project drawer.

my project :

file_a.sty file_b.sty mainfolder file_c.tex file_d.tex subfolder file_e.tex file_f.tex

I can't remove the references to subfolders and I can't remove the references to a single file inside a subfolder like file_e.tex

I can't delete the reference of a file in the main folder like file_c.tex I can only delete the reference to the main folder

In conclusion, I can remove only the references to file_a.sty and to mainfolder :(

When I say : I can't delete, I need to say that's when I close TM and when I re-open , the files are always in the project drawer .

I try to save the project but the result is the same but move to trash works well :) Perhaps i take a wrong way to create my project An idea ???

Regards Alain