problem access urls

[eluser]tnathos[/eluser]
Hello

I have a problem, my site work fine and i can access to all urls what i create.

I have only a one controller.

But the problem its when i try to access the urls throguht other pages, for example facebook using the option share, or google sitemaps, because only can access the main page.. the other pages show error 500.

Now i have a htaccess and is fine, only setup the redirect 301 for www.domain.com for htpp://domain.com...

Any?