I have no probs installing cores, But when i install levels it will say that assault_on_mestia or etc.. cant be installed, like corrupt or etc.. i downloaded 0.87 version of cores and levels. It gives me that error, then i though i'll try 0.86 and 0.87 patch on it but still gives me same error same place? any ideas how to get rid of it? (if i press iqnore, nothing happens)
i'll add pic
I have this problem with all maps starding with assault_on_mestia

Is there a way that you guys could upload ur levels folder somewhere so i could download it ?
