Remove Thumbnail Button Not Functioning

[Astriker]

I have been trying to determine why thumbnails were appearing on my blog when it showed none in the edit post. I changed the photo, and it now appears. I click "remove thumbnail" and it scrolls to the top of the page but does not remove the thumbnail. Once a Thumbnail is entered into my blog, I cannot get them to be removed.

[scribu]

What browser (including version) are you using?

It looks like a script isn't loaded properly. Try doing a cache refresh (Ctrl + F5 in Firefox).

[Astriker]

I tried in Firefox and Safari, to no luck. Safari - Version 4.0.4 (6531.21.10) and Firefox - Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.6) Gecko/20091201 Firefox/3.5.. Tried the Cache to no luck. I tried again just now, I clicked "Remove Thumbnail" and the page scrolled back up to the top of the page I'm editing with Thumbnail in tack.

[scribu]

Try installing Firebug and see if you get any JavaScript errors in the console.

[Astriker]

Hi, I've never used Firebug, but I HOPE i figured it out. It is causing an error, when I enabled the counsel and scripting.

WPRemoveThumbnail is not defined
​http://astriker.com/blog/wp-admin/post.php?post=2430&action=edit
Line 1

[scribu]

Try upgrading to the new wp version: 2.9.1.

[Astriker]

Upgraded, this was related to a plugin, which was overlaying on the post JS incorrectly.