StartCitizenLauncher exe entry point not found

Hi friends,
I love this game, when I recently updated the latest patch in my system I am getting this error message. Before the patch update everything worked well and good, the problem is after the patch update. This means the problem is with the patch, how do I fix? Could I able to remove the update? Please help me to play this game. Does anyone know how to fix the problem? Thanks.

The procedure entry point av_codec_set_pkt_timebase could not be located in the dynamic link library avcodec-54.dll.
