Zszc client crash

hi guys every time i start the clnd choose one of the servers i get a error message without text?????
(start button does not appear too???)

can somebody tell me whats wrong?

Out Dated Client :)

hey use the nwest patch and if itsnt work u need to download media.pk2

hereis the link [Only registered and activated users can see links. Click Here To Register...] i hope that i helped u