[Bug 58241] em client 10 does not work if at least one email account is added

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=58241

--- Comment #3 from [e-mail] ---
Thanks for your hint, seems that I missed attaching the logs. :(
Seems that there is at least one error with winegstreamer.
> 0:00:00.004211047  5092 0x7dd0b180 ERROR                   WINE wg_transform.c:737:wg_transform_create: Failed to create winegstreamer transform.
> 01a4:err:winediag:h264_encoder_create GStreamer doesn't support H.264 encoding, please install appropriate plugins

Could this be causing the problem? And how can I fix it?