I compile PHP (latest - 5.6.8) and Phalcon from source. php -m shows me Phalcon is installed/phpinfo() page shows same.
I create a sample project using devtools and try to run with PHP dev server (php -S) and get core dump on index page load every time.
I always tried with Phalcon 1.4 compiled source, same result.
Can post more details if relevant.