Hi, Peter. Its probably an issue with Publisher as NavEE is trying to get the site pages on that line. Which version of Publisher did you roll back to?

I logged into the CP and didn’t see the Publisher NavEE extension. Take a look at the docs, you’ll need the extension to make the two talk: http://boldminded.com/add-ons/publisher/third-party-add-ons

I don’t think this is necessarily an issue with Publisher. You’re not using Pages or Structure, but NavEE is assuming the site_pages array contains a value. I’m not sure why the error occurred after updating Publisher, but I think the NavEE code could be changed to check for the presence of the value and make sure the array is of the proper format before trying to use it.

Around line 2344 of mod.navee.php the case statement should be updated to the following:

case "pages":
    $link_type           = $r->type;
    $nav[$count]["link"] = "";

    // add install directory if necessary
    if (strlen($this->ee_install_directory) > 0)
    {
        $nav[$count]["link"] .= "/" . $this->ee_install_directory;
    }

    // add index if necessary
    if ($this->include_index == "true")
    {
        $nav[$count]["link"] .= "/" . $this->EE->config->item('index_page');
    }

    $pages = $this->EE->config->item('site_pages');

    // pages content
    if ($pages && isset($pages[$this->site_id]["uris"]) && count($pages) > 0)
    {
        $pages = $pages[$this->site_id]["uris"];
        
        if (array_key_exists($r->entry_id, $pages))
        {
            $nav[$count]["link"] .= $pages[$r->entry_id];
        }
    }

break;

This moves the pages check to just before its needed to be used, and also validates the array before trying to access it. In your case since you’re not using any pages modules, this code will never run, but for those who are, it shouldn’t fail.

I also updated Publisher to make sure this shouldn’t happen again. Either way I suggest NavEE validate the array before trying to use it. I’ve notified their developer of this ticket too.