I have the exact same issue here, on console have the following issue:
Error parsing plugins : Hostname/IP doesn't match certificate's altnames: "Host: packages.nodebb.org. is not in the cert's altnames: DNS:[domain].com, DNS:www.[domain].com"
When I change language in admin settings and restart server, application is still in old language ...
On master with last commit :
2e49fe9 2014-05-18 | fixed meta property to name, for keywords (HEAD, origin/master, origin/HEAD, master) [Julian Lam]
It works for me on latest. Maybe try to clear your cache.
@dove it is working.