Nothing in this Act contained shall leave subject to action for recovery of
compensation as aforesaid, or to action for recovery of possession of land, or
to deprivation of the estate or interest in respect of which he is registered
as proprietor, any transferee, mortgagee, encumbrancee, or lessee, bona fide
for valuable consideration of land on the ground that the proprietor, through
or under whom he claims, or any previous proprietor has been registered as
proprietor through fraud or error, whether such fraud or error shall consist
in wrong description of boundaries, or parcels, or otherwise howsoever.