I cannot manage to get anything at all with Firefox 41. In which browser(s) does it sometimes load for you?

MediaWiki hasn't been updated, according to SignPost, either.

For the records, MediaWiki gets updated every week. See https://www.mediawiki.org/wiki/MediaWiki_1.27/Roadmap and https://www.mediawiki.org/wiki/MediaWiki_1.26/Roadmap

Hmm, does this still happen? I cannot reproduce it - the GoogleTrans gadget works for me, and I do have ContentTranslation enabled. We did have some issues in this area of the code, but they should be fixed in the English Wikipedia since yesterday.

If it happens again, can you please reload the page with ?debug=true at the end of the URL and post the line at JavaScript line at which the error happens?

Thanks!

In T114462#1697479, @Amire80 wrote:

If it happens again, can you please reload the page with &debug=true at the end of the URL and post the line at JavaScript line at which the error happens?

For some reason I can't &debug=true to work. I'm abuot to leave for a bit, so I thought I'd post the console output where the problem happens... hope this helps.

Uncaught TypeError: Cannot read property 'data' of undefined

(anonymous function) @ VM3222:255
jQuery.extend.grep @ load.php?debug=false&lang=en&modules=jquery%2Cmediawiki&only=scripts&skin=vector&version=ok2tSBsQ:6
getSuggestedTargetLanguages @ VM3222:254
prepareCXInterLanguageLinks @ VM3222:255
(anonymous function) @ VM3222:256jQuery.Callbacks.fire @ load.php?debug=false&lang=en&modules=jquery%2Cmediawiki&only=scripts&skin=vector&version=ok2tSBsQ:45
jQuery.Callbacks.self.fireWith @ load.php?debug=false&lang=en&modules=jquery%2Cmediawiki&only=scripts&skin=vector&version=ok2tSBsQ:46
jQuery.extend.ready @ load.php?debug=false&lang=en&modules=jquery%2Cmediawiki&only=scripts&skin=vector&version=ok2tSBsQ:49
completed @ load.php?debug=false&lang=en&modules=jquery%2Cmediawiki&only=scripts&skin=vector&version=ok2tSBsQ:49

load.php?debug=false&lang=en&modules=jquery%2Cmediawiki&only=scripts&skin=vector&version=ok2tSBsQ:156

In T114462#1698112, @Bgwhite wrote:

In T114462#1697479, @Amire80 wrote:

If it happens again, can you please reload the page with &debug=true at the end of the URL and post the line at JavaScript line at which the error happens?

For some reason I can't &debug=true to work. I'm abuot to leave for a bit, so I thought I'd post the console output where the problem happens... hope this helps.

My bad, it has to be ?debug=true of course.

Forgot... turning off CX does make Twinkle re-appear.

with ?debug=true

Uncaught TypeError: Cannot read property 'data' of undefined    ext.cx.interlanguagelink.js:56 

(anonymous function)    @	ext.cx.interlanguagelink.js:56
jQuery.extend.grep   @	load.php?debug=true&lang=en&modules=jquery%2Cmediawiki&only=scripts&skin=vector&version=ok2tSBsQ:483
getSuggestedTargetLanguages   @	ext.cx.interlanguagelink.js:53
prepareCXInterLanguageLinks   @     ext.cx.interlanguagelink.js:114
(anonymous function)   @	ext.cx.interlanguagelink.js:150

I tried your suggestion and did

https://en.wikipedia.org/wiki/Main_Page

which did not load the gadget on Chrome 39.0.2171.71 dev-m

I then tried your suggestion with

https://en.wikipedia.org/wiki/Main_Page?debug=true

This time the GoogleTrans gadget loaded and ran. I did this twice and twice the same things happened

There probably is a timing error in loading javascript.

I Chromium with Content Translation on I also get the error TypeError: Cannot read property 'data' of undefined

In Firefox I get this error instead:

TypeError: $.uls is undefined
Stack trace:
getSuggestedTargetLanguages/<@https://en.wikipedia.org/w/load.php?debug=false&lang=en&modules=ext.cite.a11y%7Cext.cx.campaigns.contributionsmenu%7Cext.cx.eventlogging%2Cinterlanguagelink%2Cmodel%2Cutil%7Cext.cx.widgets.callout%7Cext.echo.init%7Cext.eventLogging%2CnavigationTiming%2CwikimediaEvents%7Cext.eventLogging.subscriber%7Cext.gadget.ReferenceTooltips%2Ccharinsert%2Cedittop%2Cfeatured-articles-links%2CformWizard%2Cgeonotice%2CrefToolbar%2Cswitcher%2CwikEd%7Cext.uls.eventlogger%2Cinterlanguage%7Cext.visualEditor.targetLoader%7Cext.wikimediaEvents.geoFeatures%2Cloggedin%7Cjquery.checkboxShiftClick%2CgetAttrs%2ChighlightText%2CmakeCollapsible%2Cmw-jump%2Cplaceholder%2Csuggestions%7Cmediawiki.action.view.postEdit%7Cmediawiki.api.watch%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmediawiki.searchSuggest%2Ctoc%7Cmediawiki.ui.button%2Cicon%7Cmmv.bootstrap%7Cmmv.bootstrap.autostart%7Coojs%2Csite%7Cschema.GeoFeatures%2CNavigationTiming%2CSaveTiming%2CUniversalLanguageSelector&skin=vector&version=80852b6177a1:9:1

followed by many more lines - let me know if you want the rest.

And with ?debug=true Firefox shows that the "$.uls is undefined" error is at ext.cx.interlanguagelink.js:56:0

I turned beta Content Translation off and then was able to get the GoogleTrans gadget in the enwiki main page, which I hadn't been able to do with Content Translation on for several days now.

I am now able to get the GoogleTrans gadget loaded onto the main enwiki page in both Chrome, Firefox and IE11 whereas I wasn't able to do this for the last several days. It doesn't seem that there is a problem now loading the GoogleTrans gadget anymore.