[modeller_usage] Error message: Array too small. Increase MAXSEG

Hi,

Can anyone tell me what the following error message means?

Dynamically allocated memory at amaxbnd [B,kB,MB]: 13309089 12997.157 12.693

openf5__224_> Open 11 OLD SEQUENTIAL 09-02-align.ali

openf5__224_> Open 13 OLD SEQUENTIAL ./PNPmono.pdb

defseg__223E> Array too small. Increase MAXSEG

current maximum, current need: 30 31

recover____E> ERROR_STATUS >= STOP_ON_ERROR: 1 1

Thanx,

Nancy