When I install the module it works fine. But when I click "upgrade", I am getting this error :
 

  File "C:\Program Files (x86)\Odoo 8.0-20141221\server\.\openerp\modules\registry.py", line 101, in __getitem__

ParseError: "report.paperformat" while parsing file:///C:/Program Files (x86)/Odoo 8.0-20141221/server/openerp/addons/academy/pf.xml:4, near 

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Here is my code: 

<?xml version="1.0"?>

<openerp>

<data>

    <record id="paperformat_euro_lowmargin_landscape" model="report.paperformat">   <!-- this is where the error comes from but I don't see a problem anywhere -->

        <field name="name">European A4 low margin Landscape</field>

        <field name="default" eval="True" />

        <field name="format">A4</field>

        <field name="page_height">0</field>

        <field name="page_width">0</field>

        <field name="orientation">Landscape</field>

        <field name="margin_top">5</field>

        <field name="margin_bottom">5</field>

        <field name="margin_left">5</field>

        <field name="margin_right">5</field>

        <field name="header_line" eval="False" />

        <field name="header_spacing">0</field>

        <field name="dpi">80</field>

    </record>

    <record id="paperformat_euro_lowmargin" model="report.paperformat">

        <field name="name">European A4 low margin</field>

        <field name="default" eval="True" />

        <field name="format">A4</field>

        <field name="page_height">0</field>

        <field name="page_width">0</field>

        <field name="orientation">Portrait</field>

        <field name="margin_top">5</field>

        <field name="margin_bottom">5</field>

        <field name="margin_left">5</field>

        <field name="margin_right">5</field>

        <field name="header_line" eval="False" />

        <field name="header_spacing">0</field>

        <field name="dpi">80</field>

    </record>

    <report

        id="action_report_students"

        model="intrac.students"

        string="Students Report"

        report_type="qweb-pdf"

        name="academy.report_students"

        file="academy.report_students"

    />

    <record id="action_report_students" model="ir.actions.report.xml">

        <field name="paperformat_id" ref="academy.paperformat_euro_lowmargin"/>

    </record>

    <report

        id="action_batch_attendance"

        model="intrac.batches"

        string="Batch Attendance Report"

        report_type="qweb-html"

        name="academy.batch_attendance"

        file="academy.batch_attendance"

    />

    <record id="action_batch_attendance" model="ir.actions.report.xml">

        <field name="paperformat_id" ref="academy.paperformat_euro_lowmargin_landscape"/>

    </record>

</data>

</openerp>