I noticed a couple issues in the 4.5.1 XSLT that I fixed. Unfortunately the converter doesn't always work so there were still a few issues. 

<xsl:variable name="thisFolder" select="/macro/rotateFolder/node/@id"/>    
becomes
<xsl:variable name="thisFolder" select="/macro/rotateFolder/Folder/@id"/> 

and 

<xsl:for-each select="umbraco.library:GetMedia($thisFolder, 'true')/* [@isDoc]">
becomes
<xsl:for-each select="umbraco.library:GetMedia($thisFolder, 'true')/Image">

 

Here is the full XSLT if you want to update your file:

=====================================================================

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE xsl:stylesheet [ <!ENTITY nbsp "&#x00A0;"> ]>

<xsl:stylesheet

version="1.0"

xmlns:xsl="http://www.w3.org/1999/XSL/Transform"

xmlns:msxml="urn:schemas-microsoft-com:xslt"

xmlns:umbraco.library="urn:umbraco.library" xmlns:Exslt.ExsltCommon="urn:Exslt.ExsltCommon" xmlns:Exslt.ExsltDatesAndTimes="urn:Exslt.ExsltDatesAndTimes" xmlns:Exslt.ExsltMath="urn:Exslt.ExsltMath" xmlns:Exslt.ExsltRegularExpressions="urn:Exslt.ExsltRegularExpressions" xmlns:Exslt.ExsltStrings="urn:Exslt.ExsltStrings" xmlns:Exslt.ExsltSets="urn:Exslt.ExsltSets" xmlns:tagsLib="urn:tagsLib" xmlns:BlogLibrary="urn:BlogLibrary" xmlns:CWSHelper.twitter="urn:CWSHelper.twitter"

exclude-result-prefixes="msxml umbraco.library Exslt.ExsltCommon Exslt.ExsltDatesAndTimes Exslt.ExsltMath Exslt.ExsltRegularExpressions Exslt.ExsltStrings Exslt.ExsltSets tagsLib BlogLibrary CWSHelper.twitter ">

 

 

<xsl:output method="xml" omit-xml-declaration="yes"/>

 

 

<xsl:param name="currentPage"/>

 

<xsl:template match="/">

 

<!-- start writing XSLT -->

<xsl:variable name="thisFolder" select="/macro/rotateFolder/Folder/@id"/> <!-- hard coded 2670 -->

 

<xsl:value-of select="umbraco.library:AddJquery()"/>

<xsl:value-of select="umbraco.library:RegisterJavaScriptFile('jqCycle', '/scripts/cycle.js')"/>

<xsl:value-of select="umbraco.library:RegisterJavaScriptFile('jqGoogle', 'http://cdn.jquerytools.org/1.1.2/tiny/jquery.tools.min.js')"/>

<xsl:value-of select="umbraco.library:RegisterJavaScriptFile('mttRotate', '/scripts/mtt_rotatePro.js')"/>

 

<xsl:value-of select="umbraco.library:RegisterStyleSheetFile('mttRotateCSS', ' /css/mtt_rotatePro.css ')"/>

 

<xsl:if test="$thisFolder != ''">

<div id="rotateWrap">

<xsl:variable name="images" select="number($thisFolder)"/>

<!-- rotator markup -->

<div id="rotatorMain">

<xsl:for-each select="umbraco.library:GetMedia($thisFolder, 'true')/Image">

<xsl:variable name="picFile" select="./umbracoFile"/>

<xsl:variable name="picAlt" select="@nodeName"/>

<xsl:variable name="toolTip" select="./toolTipText"/>

 

<div class="main_image"> <img src="{$picFile}" alt="{$picAlt}" title="{$toolTip}"/>

<div class="desc">

<div class="block">

<h2><xsl:value-of select="./picHeader"/></h2>

<small><xsl:value-of select="umbraco.library:FormatDateTime(./storyDate, 'D')"/></small>

<xsl:value-of select="./storyTeaser" disable-output-escaping="yes"/>

</div>

</div>

</div>

</xsl:for-each>

</div><!-- end rotator main -->

<!-- the tooltips -->

<div id="demotip">&nbsp;</div>

<div id="carousel_container">

<div id="carousel_inner">

<ul id="carousel_ul">

</ul>

</div>

<div class="clearDiv">&nbsp;</div>

<input type='hidden' id='hidden_auto_slide_seconds' value='0' />

</div>

<div class="clearDiv">&nbsp;</div>

<div id="viewMoreNews"><a href="#">More News Articles</a></div>

<div class="clearDiv">&nbsp;</div>

</div><!-- end rotator markup -->

</xsl:if>

</xsl:template>

 

</xsl:stylesheet>