Grola ROM problem d802 topic

hi guys.couple days ago i installed grola rom flash kk baseland than rom.everything was fine until i download grola rom v1.2 . i tried to flash it with twrp but there was some errors like: error cant open /misc/.. something like this.so i tried flash stock rom 4.4.2 with lg flash tool.it's done succesfull but rom won't start.lg logo than start sound and it repeat again and again :/ any help