can't load plugin libmusepack_decoder

I downloaded moc 2.5.0 and compiled it on Salixos 14 (32 bit). Everything went fine. Only thing I changed was directory prefix, from '/usr/local' to '/usr'. I launched moc and received this error,
can't load plugin libmusepack_decoder
moc runs and everything else works fine but this message is bugging me. I've made sure that required dependencies are fulfilled. I've checked and made sure that ffmpeg, musepack-tools, libmpcdec and taglib are installed. I've also checked '/usr/lib/moc/decoder_plugins' directory and libmusepack related '.so' and '.la' files are there. Any clues as to what could be wrong? Thanks!