Im having a problem placing the XsltListViewWebPart on my Default.aspx template (relevant code bellow)

<WebPartPages:WebPartZone runat="server" ID="NewsItemsList">
    <ZoneTemplate>
        <WebPartPages:XsltListViewWebPart AllowPartiallyTrustedCallers="TRUE" runat="server" ListUrl="Lists/NewsItemsListInstance" ID="NewsItems" DisplayName="" ChromeType="None" ViewGuid="{00000000-0000-0000-0000-000000000000}">
            <XmlDefinition>
                <View Name="MyView" Default="True" Type="HTML" Hidden="TRUE" TabularView="FALSE" DisplayName=" " Url="View.aspx" Level="255" BaseViewID="2" ContentTypeID="0x01000627D3E6EEDA4DCD9F403FE5F9A66E45" ImageUrl="/_layouts/images/generic.png">
                    <Query>
                    <OrderBy>
                        <FieldRef Ascending="FALSE" Name="ID"/>
                        <FieldRef Ascending="FALSE" Name="Callout"/>
                    </OrderBy>
                    </Query>
                    <ViewFields>
                        <FieldRef Name="Attachments"></FieldRef>
                        <FieldRef Name="LinkTitle"></FieldRef>
                        <FieldRef Name="Callout"></FieldRef>
                        <FieldRef Name="Icon"></FieldRef>
                    </ViewFields>
                    <RowLimit Paged="TRUE">6</RowLimit>
                    <Aggregations Value="Off"/>
                    <Toolbar Type="Standard"/>
                    
                </View>
            </XmlDefinition>
            <XslLink>/Style Library/insight/xsl/NewsPortal.xslt</XslLink>
        </WebPartPages:XsltListViewWebPart>
    </ZoneTemplate>
</WebPartPages:WebPartZone>

when I browse to the template I receive the following error

Access denied. You do not have permission to perform this action or access this resource.

This only appears when i try to use the

<XslLink>/Style Library/insight/xsl/NewsPortal.xslt</XslLink>

element if I remove this then the error goes away. This has put me in a catch 22 situation because I can style the default view of the list through the schema.xml used to provision the list, however this styles all views of the list.

Is there even a way to specify this webpart to use a specific BaseViewID? if so what is it?

happy to provide more information if needed

Thanks in advance

Nicholas