Support » Fixing WordPress » WordPress 3.6 and jQuery.BlockUI Version problem – solution

  • I saw that many people have been having some issues with jQuery.BlockUI versions after upgrading to WordPress 3.6. So did I. Having looked into it, this is what I discovered (and fixed) in my setup.

    1. WordPress 3.6 uses the newer (latest) version of jQuery, which is 1.10.2.

    2. Lots of plugins use a function call jQuery.BlockUI which requires jQuery 1.2.3 or above.

    3. Now, 1.10 IS higher than 1.2, but older versions of the jQuery.BlockUI code used by plugins have a little ‘buglet’ – the code tests for versions BUT drops the trailing ‘0’, so instead of asking is 1.10 greater than 1.2, it tests if 1.1 is greater than 1.2, and so it fails.

    4. This is NOT a WordPress problem – WordPress 3.6 merely uses the latest version of jQuery. Previous versions up to 1.9 would obviously pass the buggy test in jQuery.BlockUI code.

    5. The answer is NOT to downgrade jQuery in WordPress. Well – that might work, but don’t do it!

    6. The answer is to get your PLUGIN provider to update their plugin.

    7. My plugin used a file called wf-an-jqery-plugins.js. Inside that file was a chunk of jQery.BlockUI code that said it was v2.39.

    8. I went to the following link for the latest jQuery.BlockUI code (v2.64) and then just replaced the v2.39 code in that plugin file with the code from this link. Hey presto, it all works again:

    9. So, folks, find out which plugins you have that are using OLDER jQuery.Block UI code and have your plugin provider update it – and in the meantime if you understood what I wrote above, perhaps you can fix your plugin(s) yourself.

    I hope this helps.

Viewing 15 replies - 1 through 15 (of 21 total)
  • Moderator Jan Dembowski


    Brute Squad and Volunteer Moderator

    ChipsOnFire? Much thanks for this (really!) but instead of re-posting all this text in multiple jQuery related topics (for 3.6) it may be more productive to point them to this topic via the link.

    or even this one which I’m sure will get updated as more info such as yours comes in:

    Yeah, I’m new to the forum. Thanks for the tip, I will do that form now on 🙂

    By the way, that link to the Master List doesn’t really give the full picture. It seems to imply that the problem could be caused just by people using their own version of jQuery. This is one possibility (which I had not considered – I didn’t think people would be doing that!!). The real problem associated with the plugin errors people are seeing that talk about jQuert version numbers are NOT to do with jQuery, but the jQuery.BlockUI code in the plugin, which is entirely different to version of jQuery.

    Wow, how many times can I – or should I – type “jQuery”! lol

    Moderator Jan Dembowski


    Brute Squad and Volunteer Moderator

    No no, it’s all good. You found a problem and want to help others. That’s very cool and thanks for contributing. 😉

    Moderator Jan Dembowski


    Brute Squad and Volunteer Moderator

    By the way, that link to the Master List doesn’t really give the full picture.

    Yes, that’s true but moderators will be updating that thread as more information like yours comes in. I’m on a train and my jQuery chops are lacking or I’d do it myself (if I had the jQuery skills that is).

    It’s not a thread that can be added to by regular members but it is intended to be updated and will be.

    Moderator Ipstenu (Mika Epstein)


    🏳️‍🌈 Halfelf Rogue & Plugin Review Team Rep

    Added via my iPad, and WELL SPOTTED!

    It’s funny none of us were apparently using BlockUI in beta/trunk testing.

    I like to live dangerously – I beta test with ‘released’ code on my live site. It’s one way to gets kicks 🙂 [Children – do not do this at home!!]

    Moderator Jan Dembowski


    Brute Squad and Volunteer Moderator

    ChipsOnFire? I’ve updated your title on the forums appropriately. 🙂

    Much thanks and great job contributing!

    Thanks. I wil continue to do my best to help people 🙂

    Thank you very much ChipsOnFire!

    I found the jQuery.Block.UI file on my plugin that was causing the problem and changed it with the updated version that you mentioned (, and it solved the problem.

    I event sent the Plugin Author the update so that he could fix it!!!

    cardened Greatness!!!

    I sent it to my plugin author too, so they can roll out the fix to other less technical people hopefully much sooner.

    I’m glad I was able to help 🙂

    Oh wow, I am having this problem too but I have no idea which plugin is the culprit. The plugins I have are Akismet, Anthologize, Block Bad Queries, Blog as PDF, Facebook Like Button, Hello Dolly, IBegin Share, Official StatCounter,Print Friendly and Share Buttons by Add to Any. Do I have to contact all of them?

    Drew Jaynes


    WordPress Core Developer

    Hi msmedusa,

    One of the best ways to narrow it down would be to disable your plugins one at a time until you’re not receiving the error anymore.

    Drew, thank you! Got it on the second try and if if it useful to anyone else, Anthologize was the culprit.

Viewing 15 replies - 1 through 15 (of 21 total)
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