Display problem since the 1.8.4 update

Hello everyone,

I might not be the only one that upgraded his Piwik to the 1.8.4 version.
I followed the automatical installation procedure and now I got a display problem (that’s to say my dashboard looks like a HTML page without any CSS).

Could someone help me? I’d like to enjoy the new Piwik features like everyone :C

Thank you!

See: Troubleshooting - Analytics Platform - Matomo