bugs fcpx 3.3

hi people

i need help.....i uptedated my to macOS sierra 10.12.4 till now ok...but i updated my fcpx 10.3 to 10.3.3. then problem began.
my machine : Mac Pro (Late 2013) processor 2,7 Ghz 12 - core Intel Xeon ....problem: now when i share into mxf throug codec 1080i 29.97 xdcam HD 422 50 Mbps results in no audio file. i use compress 4.1.3 too old i know but....anybody saw anything like that? any workaround or solution ? if i share directly for mxf the disk xdcam disc did not accept the file....but if i made a apple res mov from fcpx and convert in compressor it works in xdcam....

thanks ahead