Web install won't load under Windows 7, 64 bit

[gottahot1]

Yes, I was using version 2.5. When I attempted to open a gpx file, I got a pop-up that said "downloading application". After a moment, a new pop-up appeared stating "unable to load application". One of the options was to see details. Here are the contents of the 'details' - the error stated that "JAR resources in JNLP file are not signed by same certificate":

<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.5+"
codebase="http://www.routeconverter.de/download/"
href="/routeconverter/launch/">
<information>
<title>RouteConverter</title>
<vendor>Christian Pesch</vendor>
<homepage href="http://www.routeconverter.com"/>
<description>RouteConverter shows, converts and edits GPS data in over 70 formats.</description>
<description kind="short">RouteConverter converts GPS data to over 70 formats.</description>
<description kind="tooltip">RouteConverter</description>
<icon href="../images/routeconverter32x32.gif" width="32" height="32"/>
<icon href="../images/routeconverter64x64.gif" width="64" height="64"/>
<icon href="../images/routeconverter256x256.gif" width="256" height="256" kind="splash"/>
<offline-allowed/>
<shortcut><menu submenu="RouteConverter"/></shortcut>
<association extensions="gpx" mime-type="application/x-gpx+xml"/>
<association extensions="itn" mime-type="application/x-itn"/>
<association extensions="ov2" mime-type="application/x-ov2"/>
<association extensions="route" mime-type="application/x-route"/>
</information>
<information locale="de">
<title>RouteConverter</title>
<vendor>Christian Pesch</vendor>
<homepage href="http://www.routeconverter.de"/>
<description>RouteConverter zeigt, konvertiert und bearbeitet GPS Daten in über 70 Formaten.</description>
<description kind="short">RouteConverter konvertiert GPS Daten in über 70 Formaten.</description>
<description kind="tooltip">RouteConverter</description>
<icon href="../images/routeconverter32x32.gif" width="32" height="32"/>
<icon href="../images/routeconverter64x64.gif" width="64" height="64"/>
<icon href="../images/routeconverter256x256.gif" width="256" height="256" kind="splash"/>
<offline-allowed/>
<shortcut><menu submenu="RouteConverter"/></shortcut>
<association extensions="gpx" mime-type="application/x-gpx+xml"/>
<association extensions="itn" mime-type="application/x-itn"/>
<association extensions="ov2" mime-type="application/x-ov2"/>
<association extensions="route" mime-type="application/x-route"/>
</information>
<security>
<all-permissions/>
</security>
<update check="timeout" policy="always"/>
<resources>
<j2se version="1.6+" max-heap-size="256M" java-vm-args="-Dsun.awt.disableMixing=true"/>
<jar href="webstart/RouteConverterWebstart.jar"/>
</resources>
<resources os="Linux" arch="i386">
<jar href="webstart/gtk.linux.x86-3.7.jar"/>
<jar href="webstart/linux.unknown.x86-1.3.6.jar"/>
<jar href="webstart/jna-3.2.4-stripped.jar"/>
<jar href="webstart/linux.unknown.x86-3.2.4.jar"/>
</resources>
<resources os="Linux" arch="x86">
<jar href="webstart/gtk.linux.x86-3.7.jar"/>
<jar href="webstart/linux.unknown.x86-1.3.6.jar"/>
<jar href="webstart/jna-3.2.4-stripped.jar"/>
<jar href="webstart/linux.unknown.x86-3.2.4.jar"/>
</resources>
<resources os="Linux" arch="amd64">
<jar href="webstart/gtk.linux.x86_64-3.7.jar"/>
<jar href="webstart/linux.unknown.x86-1.3.6.jar"/>
<jar href="webstart/jna-3.2.4-stripped.jar"/>
<jar href="webstart/linux.unknown.x86_64-3.2.4.jar"/>
</resources>
<resources os="Linux" arch="x86_64">
<jar href="webstart/gtk.linux.x86_64-3.7.jar"/>
<jar href="webstart/linux.unknown.x86-1.3.6.jar"/>
<jar href="webstart/jna-3.2.4-stripped.jar"/>
<jar href="webstart/linux.unknown.x86_64-3.2.4.jar"/>
</resources>
<resources os="MacOS" arch="i386">
<jar href="webstart/cocoa.macosx.x86-3.7.jar"/>
<jar href="webstart/mac.os_x.x86-1.3.6.jar"/>
<jar href="webstart/jna-3.2.4-stripped.jar"/>
<jar href="webstart/mac.os_x.x86-3.2.4.jar"/>
</resources>
<resources os="MacOS" arch="x86">
<jar href="webstart/cocoa.macosx.x86-3.7.jar"/>
<jar href="webstart/mac.os_x.x86-1.3.6.jar"/>
<jar href="webstart/jna-3.2.4-stripped.jar"/>
<jar href="webstart/mac.os_x.x86-3.2.4.jar"/>
</resources>
<resources os="MacOS" arch="amd64">
<jar href="webstart/cocoa.macosx.x86_64-3.7.jar"/>
<jar href="webstart/mac.os_x.x86-1.3.6.jar"/>
<jar href="webstart/jna-3.2.4-stripped.jar"/>
<jar href="webstart/mac.os_x.x86-3.2.4.jar"/>
</resources>
<resources os="MacOS" arch="x86_64">
<jar href="webstart/cocoa.macosx.x86_64-3.7.jar"/>
<jar href="webstart/mac.os_x.x86-1.3.6.jar"/>
<jar href="webstart/jna-3.2.4-stripped.jar"/>
<jar href="webstart/mac.os_x.x86-3.2.4.jar"/>
</resources>
<resources os="Windows" arch="i386">
<jar href="webstart/win32.win32.x86-3.7-stripped.jar"/>
<jar href="webstart/win32.win32.x86-1.4.2.jar"/>
<jar href="webstart/jna-3.2.4-stripped.jar"/>
</resources>
<resources os="Windows" arch="x86">
<jar href="webstart/win32.win32.x86-3.7-stripped.jar"/>
<jar href="webstart/win32.win32.x86-1.4.2.jar"/>
<jar href="webstart/jna-3.2.4-stripped.jar"/>
</resources>
<resources os="Windows" arch="amd64">
<jar href="webstart/win32.win32.x86_64-3.7-stripped.jar"/>
<jar href="webstart/win32.win32.x86-1.4.2.jar"/>
<jar href="webstart/jna-3.2.4-stripped.jar"/>
<jar href="webstart/win32.win32.x86_64-3.2.4.jar"/>
</resources>
<resources os="Windows" arch="x86_64">
<jar href="webstart/win32.win32.x86_64-3.7-stripped.jar"/>
<jar href="webstart/win32.win32.x86-1.4.2.jar"/>
<jar href="webstart/jna-3.2.4-stripped.jar"/>
<jar href="webstart/win32.win32.x86_64-3.2.4.jar"/>
</resources>
<application-desc main-class="slash.navigation.converter.gui.RouteConverter">

</application-desc>
</jnlp>