Movable Type users working with Firefox browser version 16 or later cannot save selected categories and folders after checking checkboxes. This issue appears in the following areas of the Movable Type CMS:
- Choosing categories in the entry editor
- Choosing folders in page editor
- Choosing folders on the uploading assets form
If you cannot choose categories and folders in above situation, please apply the appropriate patch file for your using version.
The patch includes these files:
- mt-static/js/common/List.js
- mt-static/js/mt_core_compact.js
Installation:
- Donload and unzip the patch file
- Upload List.js and mt_core_compact.js to each of the following directories.
- /path/to/mt/mt-static/js/common/List.js
- /path/to/mt/mt-static/js/mt_core_compact.js
If you have changed the location of the mt-static directory, please place the patch files in the directory that is appropriate for your installation.

Andrey Serebryakov
October 15, 2012 2:19 PM | Reply
Thanks!
Not only for Firefox, for Opera too.
And… I know, "Opera is still unsupported browser", but please don't ignore this browser :)
Opera 12.10 (currently in Beta) works fully fine with MT.
Reed A. Cartwright
October 18, 2012 12:08 AM | Reply
I'm still having problems in 4.38 with the Accept Comments and Trackbacks checkboxes on the edit entry screen.
Frank
October 23, 2012 8:51 AM | Reply
Thank you for this! Now I don't have to switch browsers.
Ben10
October 24, 2012 1:15 PM | Reply
Great job guys, even though i would advise FF users to consider Chrome ATM !
Solutis
October 25, 2012 3:56 AM | Reply
Good news ^^ I'm going to test this. Thank You.
Vinternet
October 29, 2012 7:07 AM | Reply
Hello,
Does the 4.38 patch work for Movable Type Pro version 4.23 ?
Or am I forced to update Movable Type to 4.38 ?
Thanks for your answer.
Merv
October 29, 2012 8:49 AM | Reply
I tested it all the way back to 4.32, 4.36 and 4.37 and it works
Vinternet
October 30, 2012 1:09 AM | Reply
Hello,
For information, I installed the patch on Movable Type 4.23 et it seems to be ok.
Thanks !
soutelanace
October 31, 2012 8:41 AM | Reply
I tested it.
it seem that work, i will test a little more
Isaac Sarayiah
November 5, 2012 11:25 AM | Reply
Hi
What patch version should I use if using MT 5.12?
Cheers
Isaac
Will
replied to comment from Isaac Sarayiah
November 7, 2012 9:05 AM | Reply
Ditto on this--having the same problem in FF 5.12 and would like to know which patch to use. Thanks!
Will
replied to comment from Will
November 7, 2012 12:13 PM | Reply
Ermmm... that's MT 5.12 and FF 16.0.2
Josh
November 15, 2012 7:52 AM | Reply
Thanks for the patch. Everything is ok now.
Rob Ferrara
December 9, 2012 9:41 AM | Reply
I'm using Firefox 17.0.1. I cannot sign in in MT Native or Typepad to comment on my blog. I can comment anonymously, though. IE9 and Chrome both work fine. I can sign in to my dashboard and create entries with Firefox, though.
Rob Ferrara
December 9, 2012 9:43 AM | Reply
FWIW, I WAS able to sign in here. Is this not MT5.2.2? By the way, I didn't have to use the captcha ... because I signed in?
Luciano G.
December 24, 2012 1:44 PM | Reply
Copied the two files in the proper directory but nothing changed :-(
I've exactly the problem described: check the Category (or Categories), hit Publish (or Update, it's the same) and there's no Category at all.
Now I have to create new Categories, in order to have one set. But clearly it's not a solution.
MOVABLETYPE 5.2
Many thanks
Luciano G.
December 24, 2012 2:05 PM | Reply
Whops.
I did a complete cache refresh and restarted Firefox and all works now.
Thanks!
Searching for MyLife
January 10, 2013 4:31 PM | Reply
Hey, I'm curious what exactly is the difference between 5.14 and Movable Type 5.2? I'm getting some weird errors updating between the two, I'm thinking of reverting back to the old versions?