Related to QRC

Hi 

while running QRC, i am shooted with an error " Error :Invalid DSPF cell,TIELO layout BCD035_DIG_5V, has no pins"

Please note I am using IC5141 version. BCD035_DIG_5V is a digital layout  library.

I am using ?dspfcells switch while running LVS to make all the logic gate as a black box, it mean, I am telling tool to take only I/O pins to caluculate parasitics (clearly asking the tool to calucate from gate level)

Could any one please help me in getting out of the above error. Thank you.