Image menu problems

I switched over to 2.0 on a couple of blogs I’m going to set up, at one domain after uploading a picture, then selecting it and hitting the “img” quick tag for options, the menu popup window isn’t displaying properly. In the third box (alignment) I get the following…
Instead of the word “Alignment” I have displayed:
{$lang_insert_image_align}

In the drop down menu box, instead of “—-” or baseline or any of the proper wordages I get the codes…
{$lang_insert_image_align_default}
{$lang_insert_image_align_baseline}
etc
On two of my other domains where I also setup the 2.0 versions everything works correctly (menu item wise). The menu still works correctly i.e. if I select: {$lang_insert_image_align_left} the image is aligned to the left. I was thinking that for some reason one of the php files may not of uploaded properly at this one domain and I might want to reload that one file to get the menu items to look correct. Any idea which file that would be… or is there a different problem that I may be having?
Thanks…