OMG... NSIS ERROR!

Odinstalowalem l2 chcialem zainstalowac ponownie i po nacisnieciu klaiwsza setup dostaje to:

The installer you are trying to use is corrupted or incomplete.
This could be the result of a damaged disk, a failed download or a virus.

You may want to contact the author of this installer to obtain a new copy.

It may be possible to skip this check using the /NCRC command line switch
(NOT RECOMMENDED).

   

Wczesniej tak nie bylo...
WTF?

Jeszcze raz sciagam L2 z file planet (tez sciagalem tamta instalke) chyba po sciagnieciu nie powinno byc tych samych problemow?