Cant install new version on Galaxy s5

[masterx12345]

Hey guys so this is my first ever post here but i decided to finally update dolphin from version r0.14 but every time i try to install it it just says the app didnt install. i have my device rooted and i have it to allow 3rd party apps to install. anyone know what to do? i have the galaxy s5 quad core variant, i was happily using version 0.14 before. so whats the deal?