Arnold The problem

systen version:Centos6.3
maya version:maya2013
mtoa version:MtoA-0.22.1-linux64-2013.5.tgz

plug-ins loading error:
mtoa:undefined symbol: _ZN9MFnPlugin22registerFileTranslatorERK7MStringPK cPFPvvES4_S4_bS0_ //

export LD_LIBRARY_PATH=/usr/autodesk/MtoA-0.22.1/bin/:/usr/autodesk/maya2013-x64/lib/:$LD_LIBRARY_PATH
export MAYA_PLUG_IN_PATH=/usr/autodesk/MtoA-0.22.1/plug-ins/:$MAYA_PLUG_IN_PATH
export MAYA_SCRIPT_PATH=/usr/autodesk/MtoA-0.22.1/scripts/:$MAYA_SCRIPT_PATH
export XBMLANGPATH=/usr/autodesk/MtoA-0.22.1/icons/:$XBMLANGPATH
export MAYA_RENDER_DESC_PATH=/usr/autodesk/MtoA-0.22.1/
export PATH=/usr/autodesk/MtoA-0.22.1/bin/:$PATH