Nothing in this Act
contained shall be so interpreted as to leave subject to an action of
ejectment or to an action for recovery of damages as aforesaid or for
deprivation of the estate or interest in respect to which he is registered as
proprietor any purchaser bona fide for valuable consideration of land under
the operation of this Act on the ground that the proprietor through or under
whom he claims may have been registered as proprietor through fraud or error
or may have derived from or through a person registered as proprietor through
fraud or error; and this whether such fraud or error shall consist in wrong
description of the boundaries or of the parcels of any land or otherwise
howsoever.