Problem with the Dashboard on Browser


I have installed piwik 3.0 on my Server. During the inatallation everthing was ok. But i can see anything on the Dashboard. The Mobile App is working correctly. Please can someone Help me?

Can you try to upgrade to 3.0.1-b1: I would like to test early beta and RC releases, how do I enable automatic updates to use these development versions? - Analytics Platform - Piwik - does it work better or not?

no - the menü doesnt work so i cant make the update. Can you send me the new one via email?

It is here:

i have test but there is an Error for the installation:
i have read this but this is to difficult for me.