DOCBOOK: need help with this ,

hi
i am getting this error when ever i try to parse this attached file .jade gives
out this error:
"jade:/~/maddy/docbook/docbook/html/../lib/dblib.dsl:1515:13:E:argument out of
range"
can somebody help me to debug this.
a little background 
this is a part of the manual and this is a new addition so i know for sure that
this error is becuase of this file .
basically i want a table in which some fields have more data and some have none
if need be i can provide more details 
thank you in advance 

regards
  -- 
maddy
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"Any path is only a path,Does this path have a heart?If it does,The path is
good;if it doesn't it is of no use"
		Carlos Castaneda,The teachings of Don Juan
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