In the upper right corner of the [Zimbra] Web Client, there is a link that either says Advanced Version or Standard verson. If you are using the Advanced version, it will say Standard version, and vice versa. It is backwards from the way most people interpret it!
To change the version you are working with, click the link.
We recommend that most people use the Advanced client, as it can be more intuitive or at least easier to use. However, if something doesn't look right or you can't download an image, try switching to Standard and see if that helps. You can always switch back!