I am having issues with my JPageBuilder extension.

When I import the template (doesn't matter which one) I get a message that the import was successful. When I try to save the page I get an error: Request failed with status code 413 I was getting a similar error when I attempted to upload the JPageBuilder extension.
My server admin corrected the problem by increasing the SecRequestBody Limit in /etc/httpd/conf.d/mod_security.conf file.

I have been running JoomlaArt templates on this server (by the way this is a dedicated NodeWorx server from LiquidWeb) with no problems. I also have really high values in my php.ini file so I know that isn't the issue. I can save a blank page. I can successfully save a page that has had a widget installed. But ever time I attempt to use the template I get an error. Any idea what I might do to correct this?