simma101

The latest version (1.3) of the Twenty Eleven theme has changed the “z-index” of the header.

Edit the branding style in “style.css” as follows (can edit it via WordPress admin – “Appearance -> Editor”:

#branding {
	border-top: 2px solid #bbb;
	padding-bottom: 10px;
	position: relative;
	z-index: 9999;
}

to:

#branding {
	border-top: 2px solid #bbb;
	padding-bottom: 10px;
	position: relative;
	z-index: 999;
}

To get NextGen working again.

Note that this will be overridden if you upgrade the theme again so consider creating a child theme for this fix. Also I can’t guarantee this change won’t break something else, I’m no Twenty Eleven expert.