Nothing in this Act 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 or she 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 or she claims was registered as proprietor through fraud or error or has derived from or through a person registered as proprietor through fraud or error; and this applies whether the fraud or error consists in wrong description of the boundaries or of the parcels of any land or otherwise howsoever.