Last modified: 2014-02-11 08:52:05 UTC
Experienced on http://en.wikipedia.beta.wmflabs.org/wiki/Lightbox_demo?debug=1 Firefox 26.0 Coming from the ULSPreferences init function. The value it tries to parse as JSON is "", which makes JSON.parse() fail. Fix is probably as simple as adding a try/catch.
Change 112444 had a related patch set uploaded by Amire80: Prevent JSON parsing errors https://gerrit.wikimedia.org/r/112444
Thanks a lot for the report, Gilles.
Change 112444 merged by jenkins-bot: Prevent JSON parsing errors https://gerrit.wikimedia.org/r/112444