I would delete the following rows and give it a try, mind you I have not tested it.
<SET name="HideZeroTaxes" custom="true" description="Hide Zero Taxes"
<ROW> "Tax|" Report.Tax </ROW>
===========================
Section: Tax Totals
===========================
-->
<ROW> "Tax Collected:" </ROW>
<IF>
<CONDITION> HideZeroTaxes </CONDITION>
<THEN>
<FOR each="ReportTax">
<IF>
<CONDITION> Report.Tax.Total <> 0 </CONDITION>
<THEN>
<ROW> Report.Tax.Description "|" Report.Tax.Total </ROW>
</THEN>
</IF>
</FOR>
</THEN>
<ELSE>
<FOR each="ReportTax">
<ROW> Report.Tax.Description "|" Report.Tax.Total </ROW>
</FOR>
</ELSE>
</IF>
<ROW> "" </ROW>
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