Meanwhile the new build is not available, as stated here before, the way to have the transcode working in rpi2 is to downgrade the New Transcoder to 0.9.14.6. I’ve just tested here and, besides a bit slow, it’s working without the SIGBUS error.
As a footnote : to get the New Transcoder of version 0.9.14.6 , I’ve downloaded the synology 0.9.14.6 spk from the plex archive : http://bit.ly/1pPEQFB
To extract :
cd /tmp/
wget http://bit.ly/1pPEQFB
mkdir old
mv the downloaded spk to something like old.tar and then :
tar -xOf old.tar package.tgz | tar -xzf - -C old/
Then, get the old New Transcoder from old/Resources/Plex\ New\ Transcoder and replace the buggy New Transcoder.
Have fun!