That script asks for your php directory, not the compiled .cgi location:
[quote]# Install Mailparse to which directory?
Note: This MUST be set to your PHP5 installation directory!
It depends entirely on how you went about customising your PHP during the build as to where your php files would be located.
Common places are probably /HOME/user/php5 and /HOME/user/etc/php5
Browse through your user directory via ftp/shell and try find it.
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