Gallery isn't working! HELP!

Hello!
I got a problem. I downloaded this custom novaskin resource pack. I got it in my resource pack section, in selected resource pack, but if I click APPLY TO MINECRAFT button in gallery there is install novaskin resource pack (required) button and i can’t apply this to MC. I got no premium launcher btw (SK Launcher).
Please Help

(Sorry for my English. Im from Europe)