When you use the localized version of LiveCycle ES 8.2.1 Workspace in a web browser, clicking the link to the Help files may return a 404 error. The link works correctly when you use the standard English locale. This issue has been reported particularly on French and German locales.
This was a bug in LC ES 220.127.116.11 and previous versions.
This issue has been fixed in LC ES2 18.104.22.168 and later versions. There is a patch available for LiveCycle ES 8.2.1.x, so you should contact enterprise support if you require this patch.