AddVirtualHost problem

Hi at all

I have a problem with creating Virtualhost. The process is generated 
correctly, is read and processed by ispman-agent on the host with 
apache, but does not run and in the process I was then:

IspmanStatus error
ispmanMessage You tried to call AddVirtualHost with 
domain=prova.com,ispmanVhostName=www

I do not want to make mistakes, but investigating, I understand that 
http.lib not be passed parameters, because I was:

$apacheVhostsFile null
$apacheLogsDirectory null
$apacheVhostsHeader null
$apacheVhostsFooter null

Regards

Fabio

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