Asterisk PRI Dahdi error : Span 1: Got SETUP with duplicate call ptr. Dropping call

Hi I am currently using D210P to connect to 2 X ISDN PRI E1. everything seems good, but i keep seeing the following Warning from asterisk CLI Span 2: Got SETUP with duplicate call ptr. Dropping call. when i disable Span 2, Span 1 giving the same problem [Aug 6 16:49:46] WARNING[2601]: chan_dahdi.c:13723 pri_dchannel: Span 1: Got SETUP with duplicate call ptr. Dropping call. my configuration as follows; /etc/dahdi/[login to view URL] span=1,0,0,ccs,hdb3,crc4 #span=2,0,0,ccs,hdb3,crc4 bchan=1-15,17-31 dchan=16 #bchan = 32-46,48-62 #dchan = 47 echocanceller=mg2,1-15,17-31 #echocanceller=mg2,32-46,48-62 /etc/asterisk/[login to view URL] context=inbound switchtype=euroisdn pridialplan=national signalling=pri_cpe usecallerid=yes hidecallerid=no callwaiting=yes callwaitingcallerid=yes threewaycalling=yes transfer=yes cancallforward=yes echocancel=yes rxgain=0.0 txgain=0.0 group=1 callgroup=1 pickupgroup=1 immediate=no callprogress=no callerid=asreceived group=1 callgroup=1 pickupgroup=1 immediate=no callprogress=no callerid=asreceived group=1 signalling=pri_cpe channel => 1-15,17-31 ;channel => 32-46,48-62 i am using asterisk 1.6.2.20 , dahdi-linux-complete-2.4.1.2+2.4.1 , libpri-1.4.12 CentOS release 5.6 (Final) [login to view URL] Thanks