Xml parsing issue: not well-formed (invalid token)

Well I'm getting issues with it and its really hard to find out whats wrong with it basically i know it is something to do with something not supposed to be there or missing but i can tell what help would be appreciated (and please do not vote down that always happens to me :( ) code :

<group name="bossbotHQ" >
    <visgroup zone= "10000" vis="10001 10002 10003 10004 10005" >
        <suit_edge a="2" b="3" />
        <suit_edge a="3" b="4" />
        <battle_cell width="20" height="20" x="40" y="-88.5" z="0" />
    </visgroup>
    <visgroup zone="10001" vis="10001 10002 10003 10004 10005">
        <suit_edge a="4" b="5" />
        <suit_edge a="5" b="6" />
        <suit_edge a="6" b="7" />

        <battle_cell width="20" height="20" x="124" y="26" z="0" />
    </visgroup>
    <visgroup zone="10002" vis="10001 10002 10003 10004 10005">
        <suit_edge a="7" b="8" />
        <suit_edge a="8" b="9" />
        <suit_edge a="9" b="10" />
        <suit_edge a="10" b="11" />     

        <battle_cell width="20" height="20" x="49.5" y="17" z="0" />
    </visgroup>

    <visgroup zone="10003" vis="10001 10002 10003 10004 10005">
        <suit_edge a="11" b="12" />
        <suit_edge a="12" b="1" />          
        <battle_cell width="20" height="20" x="-18.5" y="-27" z="0" />
    </visgroup>
    <visgroup zone="10004" vis="10001 10002 10003 10004 10005">
        <suit_edge a="1" b="2" />
        <battle_cell width="20" height="20" x="-5" y="-71" z="0" />
    </visgroup>
</group>

code for parser:

def createSuitPlanner(self, zone):
    sp = DistributedSuitPlannerAI(self.air, zone)

another file related to that for loading the file

def setupDNA(self):
    if self.dnaStore:
        return None
    dnaFileName = self.genDNAFileName()
    self.dnaStore = simbase.air.loadDNA(dnaFileName)
    self.dnaData = self.dnaStore.generateData()
    self.initDNAInfo()
    return None
file for the loading of the dna 
def __init__(self, loader, parentFSM, doneEvent):
    CogHQExterior.CogHQExterior.__init__(self, loader, parentFSM, doneEvent)
    **dnaFile = 'phase_12/dna/cog_hq_bossbot_sz.xml'** 

log: File "C:\Panda3D-1.9.0\python\lib\xml\sax\handler.py", line 38, in fatalError raise exception xml.sax._exceptions.SAXParseException: \phase_12\dna\cog_hq_bossbot_sz.xml:6:64: not well-formed (invalid token)