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I just figured it out… deactivate it as a network installed plugin, and reactivate it as a regularly installed plugin for each site you want it on. Error goes away.

Same thing here… I’m using it in a multisite install, if that could have anything to do with it.

I’m having the exact same problem. Haven’t found a solution yet.

I’m having the same problem, and unfortunately this fix doesn’t work.

I do appreciate you posting this info regardless.

I’m wondering if the fix not working has to do with me running wordpress 2.7.1?

Fix #1 says: $_GET[‘page’] == ‘register-plus’ ; however, my registration page is: /wp-login.php?action=register

I don’t think Search Unleashed does what you’re asking for. I just installed it. I think what they mean by saying it searches authors is that it returns posts that were authored by or commented on by that user. It won’t return a user profile.

I believe this bug was fixed in the WordPress 2.7.1 update.

Same problem here. Running 2.7.1.

There has to be a lot of people experiencing this same issue.

Thanks for the suggestion. That’s a good point, but I am previewing in the same browser.

Based on which preview button I click (either under edit post or quick edit), one works and one doesn’t.

It seems like one URL is sending to the permalink version (edit post) and one is sending to the non-permalink version (quick edit). Only the quick edit / non-permalink version works.

When I turn off xcache, the problem disappears, but I’d like to find a way to have both. When xcache is turned off, both links go to the non-permalink version of the URL.

Still stumped.

I disabled xcache, and that solved the problem.

However, I’d like to keep xcache enabled for the speed benefit.

Anyone have experience with xcache settings I can change that might get me around it?

The problem is it doesn’t see the pretty permalink path to unpublished posts, which results in a 404.

I’m gonna try the XCache plugin for wordpress and see if that helps.

A little more detail:

If the post is published, then unpublished, the preview button starts working.

Thanks! This helped me.

I finally got it!

Under Settings -> WordPress Address (URL), my domain name had mixed capitalization. Once I changed it to all lower-case, it started working.

I found this solution in another thread, reposting in case it helps anyone:

I found that my problem came with my WordPress address (URL) having uppercase letters, and apparently PHP does not like that. I suggest making sure that the URL is all lowercase. It fixed my site, who knows, it could fix yours.

I fixed this problem with a solution I found in another thread:

I found that my problem came with my WordPress address (URL) having uppercase letters, and apparently PHP does not like that. I suggest making sure that the URL is all lowercase. It fixed my site, who knows, it could fix yours.

Thank you very much to Anonymous, this fixed my problem!

I found that my problem came with my WordPress address (URL) having uppercase letters, and apparently PHP does not like that. I suggest making sure that the URL is all lowercase. It fixed my site, who knows, it could fix yours.

I’m having the same problem: images upload fine, but clicking ‘Insert Into Post’ results in the white dialog box.

I’m getting the following Javascript errors in the Firebug console:

Permission denied to call method Location.toString
https://whattheh.herald.com/wp-includes/js/thickbox/thickbox.js?ver=3.1-20080430
Line 230

Permission denied to get property Window.send_to_editor
https://whattheh.herald.com/wp-admin/media-upload.php?type=image&tab=gallery&post_id=477
Line 4

Hope this can shed some light, it seems like a widespread problem.