Um when I ad to play it,it says "ERROR :( Unable to save download. cs_CZ.lang Show more details"

Um when I ad to play it,it says "ERROR Unable to save download. cs_CZ.lang Show more details". It does that except versions
1.11.2-OptiFine_HD_U_B7 and 1.11.2 seriously plz fix this or at least gimme a way so I can play other versions....