APD generates no output

Hello everybody. I'm trying to use the Advanced PHP Debugger (APD), but it generates no output. Actually, It does generate a file, but with no content. What's going on? 1.- I installed the APD by running pear install APD with no problem. 2.- Setup my php.ini file the same way as described in <http://php.net/apd>. 3.- Restarted my web server. 4.- Called the apd_set_pprof_trace() function at the first line of my script. 5.- Loaded the web page. I have error_reporting set to E_ALL and display_errors is enabled, but... PHP doesn't output errors, does it mean that everything was OK? 6.- When I open the file generated by APD, I realize it's empty. 7.- Anyway, I run pprofp -R pprof.<number>.0, but there's no output (not even an error message). I was using PHP v5.0.4 and APD worked just fine, but I had to downgrade to PHP v5.0.3 and now I have this problem. In both versions of PHP I was using APD v1.0.1. The fact that I had downgraded to v5.0.3 has nothing to do with this problem (IMO), as I deleted all of the files in the previous PHP directory prior to install PHP 5.0.3. TIA! Cheers. -- Gustavo Narea. PHP Documentation - Spanish Translation Team. Valencia, Venezuela.