Checkout the log entries for a site I am working on, I found multiple pairs of the following notice/error:

Error: Form build-id mismatch detected while attempting to store a form in the cache. Notice: Undefined index: #build_id in form_set_cache() (line 564 of /dir/includes/form.inc).

I am using media-2.x with plupload and multiform. The above messages are always logged for all files uploaded through plupload at file/add. Any ideas what is going on here and how to fix it? There will be a lot of file uploads on this site, and I really don't want the database filling up with these log entries.

I am getting these messages with Pantheon and with my local environment, so going to assume it is not a server configuration issue, Core and all modules are up to date. Php is 5.4.

Any help would be very much appreciated!

closed as off-topic by kiamlaluno Apr 26 '15 at 16:57

  • This question does not appear to be about Drupal within the scope defined in the help center.
If this question can be reworded to fit the rules in the help center, please edit the question.

  • I'm voting to close this question as off-topic because it is about a bug in a third-party module. – kiamlaluno Apr 26 '15 at 16:57

There is a bug in multiform that was introduced by recent changes to Drupal Core. The bug has been reported in the module's issue queue and a patch has been provided: https://drupal.org/node/2247527

The patch fixed the issue for me, and hopefully will be included in the next release of the module.

  • Is this for the Multiform module itself? Also I should note, that despite the error messages, I am still able to upload files without issue. It's just a matter of the database log ballooning with error messages. – filmoreha May 29 '14 at 23:50
  • Yep, the patch is for the Multiform module. I had the same issue as you -- I was seeing the same notices in my error log, but everything was still functioning. I searched around for a cause and actually came upon your question first. I kept looking and came upon the issue with the patch. Applying the patch solved the issue for me, so I came back here to share what I found. – JuliaK May 30 '14 at 15:07
  • Awesome, just had a chance to test out the patch. Works as described. Thanks so much! – filmoreha Jun 2 '14 at 5:37

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