Talk:Recent Updates/@comment-24420915-20140423090942/@comment-26035487-20140423115114

Check the viewer's website — http://grabacr.net/kancolleviewer — it says

2014/04/23: 艦これ本体側のアップデートにより、動作しなくなっています. 対応まで暫くお待ちください.

Loosely translated, it's “Backend was changed, adapting KCV will take a while”.