Plesk 8.4 -> 8.6: Websites/Apache stop working

[allcam]

Hello

after the Update my Apache dont work :-(

Error:
Service is not available now, probably your Plesk is misconfigured.
Contact Your provider for details.

Internal Plesk error occurred: Unable to make action: Unable to manage service by websrvmng: websrvmng: Service /etc/init.d/apache2 failed to restart

I only start the UPDATE !!!