Bug 1178035 - Broke qBittorrent

error code

qbittorrent: symbol lookup error: qbittorrent: undefined symbol: 

_ZN19QtSingleApplication11sendMessageEPKci'

이유 : Update qtsingleapplication to 2.6.1-12.fc21

해결: Downgrade to 2.6.1-11.fc21 makes it work.

출처: https://bugzilla.redhat.com/show_bug.cgi?id=1178035