DOCBOOK: need help with this ,

[madhu <b_maddy_016 at yahoo dot com>]

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
***********----------------************---------------------**************-----------******** 
"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
***********----------------************---------------------**************-------------*******
<chapter label="13" id="mnbhd">
<title>People behind the scenes</title>
<para>Knowing who is doing what to which card might be useful ,incase you would
like to chip-in ,contribute .or it could be that you have a idea which might
enhance the present Drivers .So here is all that you would like to know about
the men behind <acronym>ALSA</acronym></para>
 <table pgwide="1" frame="all"><title>Ringside view</title>
<tgroup cols="5">  <thead> 
<row> 
<entry>Name</entry>
<entry>Chipset/Type</entry>
<entry>Interface</entry>
<entry>Maintainer</entry>
<entry>Coder</entry>
</row> 
</thead> 
<tbody> 
<row> 
<entry morerows="2" valign="top">Gravis UltraSound Plug & Play,Dynasonic 3-D
STB Sound Rage 32,UltraSound 32-Pro (STB)
MED3210</entry>
<entry morerows="2" valign="middle">AMD InterWave</entry>
<entry morerows="2" valign="middle">MIXER,PCM,
MIDI,SYNTH</entry>
<entry morerows="2" valign="middle">Jaroslav Kysela
&lt;perex@suse.cz&gt;</entry>
<entry morerows="2" valign="middle">NA</entry>
</row> 
<row> 
<entry morerows="2" valign="middle">NA</entry>
<entry morerows="2" valign="middle">Gravis UltraSound MAX</entry>
<entry morerows="2" valign="middle">MIXER,PCM,
MIDI,SYNTH</entry>
<entry morerows="2" valign="middle">Jaroslav Kysela
&lt;perex@suse.cz&gt;</entry>
<entry morerows="2" valign="middle">NA</entry>
</row>
</tbody>
</tgroup>
</table>

</chapter>