AMS 5 - Enabling htcacheclean on Windows

I'm trying to enable htcacheclean for AMS on windows. I've performed the following steps:

1. Modified the ams.ini to enable htcacheclean:

1.a. Set SERVER.HTCACHECLEAN_ENABLED = true

1.b. Set SERVER.HTCACHEROOT = C:/Program Files/Adobe/Adobe Media Server 5/Apache2.2/cacheroot

2. Updated the httpd.conf by uncommenting LoadModule cache_module modules/mod_cache.so

3. Double-checked the Server.xml htcacheclean block which looks like this:

<HtCacheClean enabled="${SERVER.HTCACHECLEAN_ENABLED}">

  <Directory>Apache2.2/bin</Directory>

  <Program>htcacheclean</Program>

  <RequiredOptions>-p${SERVER.HTCACHEROOT} -d5 -l1024K</RequiredOptions>

  <AdditionalOptions>-n -t -i</AdditionalOptions>

</HtCacheClean>

The htcacheclean tool doesn't seem to run or launch. I've checked the master.00.log and don't see AMS invoking the htcacheclean daemon:

I've tried this on both a Windows 2010 Server and a Windows 7 Professional machine with identical results. Also, I've verified that I can run the htcacheclean tool manually without error from the command line.

Anyone have any idea of what I'm missing?

Thanks in advance!