To people using french provider Free (www.free.fr) : it seems to have problem with .htaccess file in roster's root directory.
Comment it or delete it.

Symptom is :
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
when you try to access your roster installed site.

Hello,

Yes me too. I can't install Roster 2.0 because my french provider free.fr don't want the file .htacces.

It's possible to delete it?

Thanks

Yes, you can remove it safely
It's only for running roster in SEO link mode