I have all errors turned on (error_reporting(-1)) in Drupal, but for some reason most errors do not come through in the logs or on screen. I can replicate the problem by simply changing a function name to something else, and I would expect to see a function doesn't exist error, but I just get a white screen. I have tried replicating this outside of the Drupal framework and I can't - so it leads me to believe it isn't my setup of PHP (Zend Server/Apache2/PHP/Windows) but is in Drupal somewhere...
Any ideas anyone?
I started to enable/disable modules to see when I could see errors again and limited it to two modules that turned off the error handling... After more investigation I found that in a nusoap.php class error reporting had been turned off because certain errors kept showing (some other developer had turned it off)... Turned it back on, upgraded nusoap.php and now all is working... Thanks for the help all