Title: tinyMCE undefined
Last modified: August 18, 2016
---
# tinyMCE undefined
* [Streetwise](https://wordpress.org/support/users/streetwise/)
* (@streetwise)
* [20 years, 5 months ago](https://wordpress.org/support/topic/tinymce-undefined/)
* I just did an upgrade on my blog on a test server. It seems to work fine except
that whenever I log into the dashboard, I notice a small yellow triangle in the
lower left browser window (IE) and either ‘Done’, or ‘Done but with errors’,
or sometimes ‘error’.
* It only happens on the ‘Write’ and ‘Manage’ tabs as follows:
* **‘Write/Write Post’ tab:**
* Line: 502 (sometimes it’s ‘494’)
Char: 1 Error: ‘tinyMCE’ undefined Code: 0
URL: [http://www.myblog.com/wp-admin/post.php](http://www.myblog.com/wp-admin/post.php)
* **‘Write/Write Page’ tab:**
* Line: 371
Char: 1 Error: ‘tinyMCE’ undefined Code: 0 URL: [http://www.myblog.com/wp-admin/page-new.php](http://www.myblog.com/wp-admin/page-new.php)
* **‘Manage/Posts’ tab:**
* Line: 156
Char: 87 Error: expected ‘j’ Code: 0 URL: [http://www.myblog.com/wp-admin/edit.php](http://www.myblog.com/wp-admin/edit.php)
* Sometimes, a quick refresh will make the errors go away, sometimes not. Those
are the only tabs that seem to be problematic.
* **‘Links’ tab:**
* Page load initially would go into some type of loop with a reload. Now all it
does is produce a “Page cannot be displayed” error…
* These are the only issues I’ve found so far. Any help would be appreciated.
* WinXP Pro
Apache 2.0.55 PHP 4.4.1 MySQL 4.1.16
Viewing 6 replies - 1 through 6 (of 6 total)
* [dthought](https://wordpress.org/support/users/dthought/)
* (@dthought)
* [20 years, 5 months ago](https://wordpress.org/support/topic/tinymce-undefined/#post-302870)
* I noticed this as well. It appears to be that they’re sending the JS file via
Gzip… and IE simply won’t decode it properly. I would presume their Gzip libraries
are borked, because IE usually does Gzipped stuff just fine.
* Here’s a quick fix:
* Open up wp-admin/admin-header.php
* Find the lines
* Replace with
*
* Oh, and whilst you’re at it, feel free to go into admin-functions.php and comment
out lines 1589 – 1596. Filthy BrowseHippy scum. Snidely suggesting that people
change browsers is inappropriate on people’s sites. If WP want to put it on their
own site, so be it, but they should not force their propaganda onto others. If
you aren’t totally clueless with security patches and randomly accepting plugin
downloads, IE is just fine. If you are good at what you do, you write conditionals
to work around IE issues… so then everyone can view your work. That’s what it’s
all about.
* Moderator [Matt Mullenweg](https://wordpress.org/support/users/matt/)
* (@matt)
* [20 years, 5 months ago](https://wordpress.org/support/topic/tinymce-undefined/#post-302873)
* Under Options > Reading there is an option:
* [ ] WordPress should compress articles (gzip) if browsers ask for them
* Uncheck this if you would like TinyMCE not to be gzipped.
* [Tony G](https://wordpress.org/support/users/starbuck/)
* (@starbuck)
* [20 years, 4 months ago](https://wordpress.org/support/topic/tinymce-undefined/#post-303100)
* Just a follow-up for posterity here: I recently installed WP2.0 and have been
adding plugins. One of them seemed to have induced the error described here.
I deactivated all plugins and the error persisted. I edited the admin-header
as described here (saved the original and added a new line) and it’s working
now. Something caused this to break, I’m curious what it was. I’ll post here
if I get a clue. (Story of my life.)
* BTW Mike, I’ve been meaning to get rid of that little IE slander, thanks for
reminding me. 🙂
* [halinagold](https://wordpress.org/support/users/halinagold/)
* (@halinagold)
* [20 years ago](https://wordpress.org/support/topic/tinymce-undefined/#post-303168)
* I’ve had a similar problem and none of the suggested helped. After trying this
and that I finally deleted the whole wp-admin folder from the server and then
uploaded a fresh copy. This did the trick.
* [waschbecken](https://wordpress.org/support/users/waschbecken/)
* (@waschbecken)
* [19 years, 8 months ago](https://wordpress.org/support/topic/tinymce-undefined/#post-303210)
* I also tried to fix my “undefined” problem but it still exists after the admin-
header.php mod. But the tinymce problem only occurs using IE6. With FF, IE7,
Mozilla everythins works fine.
Any further hints?
* [Dave Kaufman](https://wordpress.org/support/users/dkaufman1/)
* (@dkaufman1)
* [19 years, 8 months ago](https://wordpress.org/support/topic/tinymce-undefined/#post-303211)
* Ok…I had to post this…I have been searching for how to bring back the tinyMCE
Editor for a few days now. Tried all the regular tricks (delete everything and
reinstall).
* So I tried [@dthought](https://wordpress.org/support/users/dthought/) post. Nothing.
I figured I wanted to keep searching with a “clean” install so I reverted back
to the original line, and I see the WYSIWYG Editor. Odd!
* Just posting for those who are searching the forums.
Viewing 6 replies - 1 through 6 (of 6 total)
The topic ‘tinyMCE undefined’ is closed to new replies.
## Tags
* [tinymce](https://wordpress.org/support/topic-tag/tinymce/)
* [undefined](https://wordpress.org/support/topic-tag/undefined/)
* In: [Alpha/Beta/RC](https://wordpress.org/support/forum/alphabeta/)
* 6 replies
* 7 participants
* Last reply from: [Dave Kaufman](https://wordpress.org/support/users/dkaufman1/)
* Last activity: [19 years, 8 months ago](https://wordpress.org/support/topic/tinymce-undefined/#post-303211)
* Status: not resolved
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