How can I get a HTML report with frames?

I'm trying to generate an HTML report with frames but I fail: I just get an
empty file.

I can have a simple report (checkstyle-simple.xsl) or a report without
frames (checkstyle-noframes.xsl) but when I use checkstyle-frames.xsl I get
no output.


What am I doing wrong?


JDK 1.6.0_15
Ant 1.7.1
Checkstyle 5.0


Extract of my build.xml:

<target name="run-checkstyle">
	<mkdir dir="${dir.reports.checkstyle}"/>
	<checkstyle config="${dir.checkstyle}/sun_checks.xml" failonviolation="no">
		<fileset dir="${dir.src}" />
		<formatter type="xml" toFile="${dir.reports.checkstyle}/checkstyle.xml"/>
	</checkstyle>
	<mkdir dir="${dir.reports.checkstyle.html}"/>
	<xslt in="${dir.reports.checkstyle}/checkstyle.xml"
out="${dir.reports.checkstyle.html}/cs_noframes.html"
style="${dir.checkstyle}/contrib/checkstyle-noframes.xsl"/> <!--OK-->
	<xslt in="${dir.reports.checkstyle}/checkstyle.xml"
out="${dir.reports.checkstyle.html}/cs_frames.html"
style="${dir.checkstyle}/contrib/checkstyle-frames.xsl"/><!--Empty HTML-->
</target>

Console log:

Buildfile: C:\Dvl\java\gtsc\framework4\build.xml
run-checkstyle:
[checkstyle] Running Checkstyle 5.0 on 25 files
     [xslt] Processing
C:\Dvl\java\gtsc\framework4\reports\checkstyle\checkstyle.xml to
C:\Dvl\java\gtsc\framework4\reports\checkstyle\html\cs_noframes.html
     [xslt] Loading stylesheet
c:\checkstyle-5.0\contrib\checkstyle-noframes.xsl
     [xslt] Processing
C:\Dvl\java\gtsc\framework4\reports\checkstyle\checkstyle.xml to
C:\Dvl\java\gtsc\framework4\reports\checkstyle\html\cs_frames.html
     [xslt] Loading stylesheet
c:\checkstyle-5.0\contrib\checkstyle-frames.xsl
BUILD SUCCESSFUL
Total time: 1 second
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