The change of the code posted on (http://www.wmiles.com/2013/01/03/w3tc-cache-preload-for-version-0-9-2-5) fixed my page cache issue and running now at the load before the upgrade. Really appreciate the create the fix and posting it.
When I try to install the modified version of the plugin by uploading the zip file I get an error:
The package could not be installed. No valid plugins were found.
Plugin install failed.
What I am missing, any pointers are appreciated