register_activation_hook

Hi,

i′m writing a plugin. But i have a problem with the install routine.

When i want to activate the plugin, i get the error “Das Plugin kann nicht aktiviert werden, da es einen fatalen Fehler erzeugt.” that means “The plugin cannot be activated. It caused a fatal error.”

But i see no error message.
I′ve tried a lot.

// multiside installation
function ecp_activate($networkwide) {
	global $wpdb;
	if (function_exists('is_multisite') && is_multisite()) {
		if ($networkwide) {
			$old_blog = $wpdb->blogid;
			$blogids = $wpdb->get_col("SELECT blog_id FROM $wpdb->blogs");
			foreach ($blogids as $blog_id) {
				switch_to_blog($blog_id);
				ecp_install();
			}
			switch_to_blog($old_blog);
			return;
		}
	}
// single installation
  ecp_install();
}

// install function
function ecp_install(){
	global $wpdb;
	$ecp_table = "CREATE TABLE IF NOT******and so on*****
	$wpdb->query($ecp_table);
}

register_activation_hook( __FILE__, 'ecp_activate' );

Whats wrong?

Best regards