I've been having problems with an inherited website. The latest problem is that when we insert an image stored in the media library to a page, we get a 404 error upon updating the page and the changes are not saved. In a few cases, we get the 404 error as we are inserting the image (and the image is not inserted).
Tonight, I updated everything - WP 3.4.2 > 3.5.1, updated all plugins (and, yes, tried doing all of my editing with the plugins disabled). I had the problem before the updates, and I have the problem after the updates.
On one page, I was able to successfully insert the image "from url" (despite that url pointing to our own media library). While I am able to insert images using the url (and see them just fine in the visual editor) on other pages, when I click Update to save the page, I get a 404 error.
I am able to save the page if I haven't made any changes AND if I make changes to the text. But I can't save with an image in there.
Here's the line of code I'm attempting to add:
<img src="http://thrivingplanet.org/elisa/wp-content/uploads/2013/03/Screen-Shot-300x91.jpg" alt="Screen-Shot" width="300" height="91" class="alignnone size-medium wp-image-1590" />
I tried stripping out everything - class, width, height - and leaving only the
<img src="..."> code. No dice. I still get a 404 error upon saving the page.
Here's the page where I am trying to insert the code above:
Anyone have any thoughts? I found a few threads about 404 on update, but all of the posts I read were 3 or 4 years old and it looked as if their content was saved, whereas my changes are not.