801	$currentDir path does not exist
	(checkDirectory.php)

802	$PXP_basedir is not part of $currentDir
	(checkDirectory.php)

803	found ".." in $currentDir
	(checkDirectory.php)

804	found ".." in $fileName, $soureURL (get.php) or $newName
	(inside a lot of action dialogs)

805	current user (or his role) is / are not part of $PXP_share_users (or $PXP_share_roles)
	(checkSharePermission.php)

806	permission "by path" stops access
	(checkPermissions.php)

808	part of the current path is prohibited "by name"

809	checkFilePermission returned false