Check your database to see how your WP blog tables are named. My modifications assumes that they are of the form wp_5_posts, etc. (Bad practice on my part – I should rewrite these directions to reflect the correct way of doing things.) If you use a different database prefix from wp_, you’ll need to change it in the first line of the replacement code to reflect the correct database naming scheme.

You might also check the postmeta table of your tags blog. (In my case it’s wp_28_postmeta – replace ’28′ with your tags blog id.) Check to see if you can find anything with the meta_key ‘siteurl’ or ‘blogname’.

I just did some testing on my own site and the plugin seems to be working fine (though it wasn’t for a while, because the plugin had been upgraded to the most recent version without the modifications having been applied). On that note – and this is a silly point – you did figure out that the code to be replaced is no longer in the vicinity of 179 in the plugin, right? Now it’s around 250.

Let me know what you find.

Ever since I found and installed the sitewide tag plugin, I’ve been trying to find out how to add the blog info to the output on the main page. The plugin code is not obvious to me, and the documentation is thin to nonexistent. I believe your article on this issue is perhaps the only one out there. I was pleased to find someone addressing this obvious issue.

However, I’ve not had any success with the remedy. One thing that surprised me about your article is that the plugin is installed in the plugins directory. The documentation for installing the plugin is to drop it in the mu-plugins.

In any event, I tried both directories and came a cropper. What I did was replace the four lines of code in the sitewide file with the code you listed under the heading, “Other changes to the tags theme”. I then introduced the code in the second part of that subhead to the index.php file in the wp default theme root directory. The result in each case was that the condition, if (get_post_meta($post_id, ‘siteurl’, true)), was not met and assignments in the statement were not made.

Is this enough information for you to understand what might be going wrong?