Hi all,
I deactivated two modules (to show social media icons) in the backend.
After this the browser-window is empty. Nothing but a white page.
I get a 500 Internal Server Error.
The Frontend is working.
What can I do?
....
Is this a normal reaktion of Prestashop? 
I hope not.
:::::::::::::::::::: EDIT ::::::::::::::::::::::::::::
If you have a white page, presta seems not to work in backend delete /var/cache !!!
Yes, was already discussed ;(
You can close this posting.
[SOLVED]
yours
Daniel