[phpCallGraph-general] phpcallgraph errors on using png

Hello

I just came across this tool and started off with an example provided with the installation. It worked fine with the text format, but gave me the following for some others like png, etc. I'd like to be able to view the call graph visually if supported. Any help on this is highly appreciated!

php ../bin/phpcallgraph -g -p -f png -o graph.png ../test/testfiles

PHP Deprecated:  Comments starting with '#' are deprecated in /etc/php5/cli/conf.d/mcrypt.ini on line 1 in Unknown on line 0
PHP Deprecated:  Assigning the return value of new by reference is deprecated in .../Project/PHPCallGraph/phpcallgraph-0.8.0/lib/pear/PEAR.php on line 569
PHP Deprecated:  Assigning the return value of new by reference is deprecated in .../PHPCallGraph/phpcallgraph-0.8.0/lib/pear/PEAR.php on line 572
PHP Warning:  require_once(Console/Getopt.php): failed to open stream: No such file or directory in .../PHPCallGraph/phpcallgraph-0.8.0/lib/pear/System.php on line 27
PHP Fatal error:  require_once(): Failed opening required 'Console/Getopt.php' (include_path='.../PHPCallGraph/phpcallgraph-0.8.0/src:.../PHPCallGraph/phpcallgraph-0.8.0/lib/ezcomponents:.../PHPCallGraph/phpcallgraph-0.8.0/lib:.:/usr/share/php:/usr/share/pear:.../PHPCallGraph/phpcallgraph-0.8.0/lib/pear') in /home/mariposa/Desktop/Project/PHPCallGraph/phpcallgraph-0.8.0/lib/pear/System.php on line 27


Thanks much!

Mohan