Export to MS project in XML format

Hello
I exported a project cerated in version 8.0.4 of ProjeQtOr and I am unable to open the exprted XML file with MS project. I get a message saying that the file may be dammaged. Is there a setting in ProjeQtOr that I must modify or is there a know problem with 8.0.4 ?
Regards
Michel

Hello Babynus,
The file is in XML format.
Regards
Michel
Here is the last 5 lines of the XML file :
<Assignment>
<UID>171</UID>
<TaskUID>166</TaskUID>
<ResourceUID>34</ResourceUID>
<div class="messageERROR" >ERROR : Division by zero<br/>&nbsp;&nbsp;&nbsp;in jsonPlanning.php<br/>&nbsp;&nbsp;&nbsp;at line 1580</div><input type="hidden" id="lastSaveId" value="" /><input type="hidden" id="lastOperation" value="ERROR" /><input type="hidden" id="lastOperationStatus" value="ERROR" />

Thank-you.
Bonne journée
Michel