The message about ZEND was NOT for you but for me. The Zend software is something for our server, not you. I'm surprised anyone could even install it. Please uninstall it, it is doing nothing for your machine and may make things worse.
I'm very sorry for the confusion.
Please, If I made changes that would require you to install some foreighn software, I would have given plenty of notice.
I've had a amessage at the top of the screen saying the site may up and down. That is what you are seeing. ANd it will start again in the morning when I try to unravel this mess.
Aghain sorry.