set_error_handler() with class, method as parameters problem.

This is not exactly a bug report, because i am not sure where problem is. I am using PHP4.3.1 on Win2000/IIS. I am setting a custom error handler through: set_error_handler(array(&$objError, 'handleError')); where $objError is an instance of an error handling class. Then, i trigger a user error in the following way: trigger_error("test error", E_USER_ERROR); The problem is that sometime the custom error handler is invoked and sometimes it is NOT. The times when it is not invoked i get the following error: Fatal error: test error in C:\********.php on line 104 Does this mean that there is a problem in my Error Handler class or is that a PHP issue with using a Custom Error Handler class? Thanks in advance, Lukasz Karapuda @ luki@thenewline.com