I localized a text file in my application that currently is only supported in English

I'm using this code to get the path:
[[NSBundle mainBundle] pathForResource:@"Quotes" ofType:@"txt"]
On my system (Lion 10.7.2) it returns the expected path (English) when on any language
build/Beta/MyApp.app/Contents/Resources/en.lproj/Quotes.txt
But for some international users, this code is returning nil. I have not yet confirmed it but currently its only happened to Snow Leopard users.
Any Ideas? Thank you.
Edit:
- Mac OSX 10.7.2 German
- Snow Leopard English
- Mac 10.6.8 German
- Mac OSX 10.7.2 Chinese
Snow leopard theory is gone also, there is an English mac that also returns nil, this is confusing.