eLife site changed?
I have used the eLife translator before without a problem, but at the present time the Zotero Connector on Chrome (4.0.26) seems to offer the DOI translator only.
http://elifesciences.org/content/5/e14239v1
http://elifesciences.org/content/5/e14239v1
Your version of Zotero will automatically update within 24hs, or you can update manually using the "Update Now" button in the "General" tab of the Zotero preferences. If you're using Standalone, restart Zotero and your browser after updating.
Any further problems let us know & thanks for reporting