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I recently noticed that this same issue was occurring with the plugins Wishlist and Wishlist Auto Registration. Updating WordPress and the two plugins resolved the issue for me.

Hey folks, if you are using the iThemes Security plugin, that will cause a 404 error. In the ithemes security settings, I added /sitemap.xml to the 404 white list, as well as the exclusion list for the file change detection feature. Once I did those two things, I stopped getting a 404.

Not sure if that’s everyone’s problem, but I hope it helps some of you.

Thanks John. I wish that this server had done that, however, it’s not a shared hosting account, but a VPS.

I’m still wondering if anyone on the development team might now if WordPress will survive a mysql database upgrade like this in one go, rather from step to step.

Just to be clear, the sites are all running the latest 4.x version.

We were able to debug the issue. It was a programming conflict on our part. Thanks ??

Also, when I turn debugging on, I get this error…

Notice: Undefined offset: 0 in …/wp-content/plugins/the-events-calendar/public/template-tags/general.php on line 206

I’ve encountered the double display of visual and text mode as well. The end-user made changes in the visual editor, but they were not saved.

Also, the issue is intermittent. If I deactivate the plugin, then reactivate it, the behavior goes away.

Just as an FYI for you, the installed plugins on my site that change the admin area are…

backup buddy
jetpack
all in one seo pack – by michael torbert
gravity forms
simple page ordering – by jake goldman

Actually, the ‘rem’ unit is a great replacement for the ’em’ unit.

It can be used in the same exact way, but without the pitfalls of parent inheritance like the ’em’ unit. ‘rem’ looks to the top container (html) for guidance.

Aside from that discussion, you can get fractions of a size change with rem. Ever wanted to do a font size, 12.5? Set html { font-size:10px } then your font-size to 1.25rem. boom.

fun stuff.

Thanks Jan, the hardening wordpress article is a great resource.

This article really identifies the issue.

https://domesticenthusiast.blogspot.com/2012/03/dyslexic-mayans-want-to-sell-you-cialis.html

There couldn’t be much of a better write up.

The hack must have been placed by someone with shell or FTP access. This is a general PHP hack, and not limited in anyway to wordpress.

It’s a nasty one. I hope this research helped.

I found this as well on a slew of sites that are on a shared server.

I think the real culprit was a new file that was inserted into the core, wp-rss3.php.

I’d gotten a notice from the hosting provider that this was a potential security risk. When I edited it I found a script with resetting this parameter $_8b7b.

Here’s an interesting post on it.
https://discussion.dreamhost.com/printthread.php?tid=134262&page=12

This post is way more interesting…
https://domesticenthusiast.blogspot.com/2012/03/dyslexic-mayans-want-to-sell-you-cialis.html

I tried to figure that out too. I ended up installing a second plugin for that purpose, AmR iCal Events List. AmR will give you the ical data in raw format, so you can pretty much do anything with it. If I had enough time, I’d build out my own monthly calendar format and use it exclusively.

So I have both ICS and AmR installed. I use ICS for the monthly calendar output, and AmR for the list output. Kinda dumb, but I didn’t have the time (aka client wasn’t paying me) to rebuild a plugin for them.

I’ve added the standard jQuery datepicker by installing the appropriate jquery ui .js and .css files, adding an identifying ID to the contact form 7 form field, and calling jQuery’s datepicker(); on that ID.

Here is a great resource for information on Tiny MCE:

https://wiki.moxiecode.com/index.php/TinyMCE:Index

…from the horses mouth…

FYI,

I broke the visual editor by applying this filter to tiny_mce_before_init in my functions.php file as seen above.

…aka adjusting the buttons and styles that showed up on the wysiwyg editor.

It was simply a matter of bad coding that broke it, so it was an easy fix.

Just a word of caution on that, it’s easy to break ??

I broke my visual editor by applying a filter to tiny_mce_before_init in my functions.php file

…aka adjusting the buttons and styles that showed up on the wysiwyg editor.

Just a word of caution on that, it’s easy to break ??

Here’s an answer for WP 3.0. I do not have a tiny_mce plugin installed. I’m just using what comes with WP3.

I’ve got this in my functions.php file:

if ( ! function_exists( 'my_formatTinyMCE' ) ) :
function my_formatTinyMCE($init) {
  $init['theme_advanced_buttons2_add'] = 'styleselect';
  $init['theme_advanced_styles'] = 'Home-header=highlight-header';

  return $init;
}
endif;

add_filter('tiny_mce_before_init', 'my_formatTinyMCE' );

To explain:

• [‘theme_advanced_buttons2_add’] – add the ‘styles’ drop down to one of your button bars (I chose #2)
• [‘theme_advanced_styles’] – add a style