The TLK is different. This scene is a revamp, but is still primarily, from the vanilla game, and is for the US version. That means it uses StrRef's corresponding to the .TLK file, which probably has some difference besides the obvious. If there are differences in the Euro and US versions in the numbering, it will not work. I am not sure that is the case, but it seems a likely explanation. Sorry.
But.... did you do the right-clicky un-ticky on the Read-Only box for your swkotor2 folder, and apply changes? Then rinse and repeat for the modules folder if the changes did not apply to all the subfolders. This might be helpful....