To tell you the truth I've never heard of Zimbra so please bare with me.
I have Comcast cable internet and I use their e-mail service. They changed it about a month ago and now call it Smartzone. It has been working just fine all this time but yesterday I checked my e-mail at 6:00 am, worked fine, I left the computer on and then came back about 4 hours later and I could no longer open any of my e-mail. Including messages that I had already opened, Sent messages or anything in the Trash or Spam folders. I can't open Compose, or Reply, or Forward.
At the bottom of the page it says Error on Page. Clicking on it gives me this error.
'ZmMsgController' is undefined
Google lead me to this forum, can someone please tell me what it means?