Extract files

hi guys,i already did alot of downloads of planes but since yesterday im trying to do some downloads and after i do the download when its time to extract the files it freezes and it says .."windows has encounter a problem and has to close"..,so what i did was i try do do the same download on my other computer just to see if it work,i download the files did the extract to a temp folder and everyrhing work good but it says the files is corrupted..
,...can anybody give a idea how to fix this please.
thx

thx