Each time I load up the launcher and hit 'play', the progress bar starts to load, but then instead of launching minecraft, it just opens up a new tab in the launcher called 'game output' that is blank. I am running (or trying to run) Minecraft vanilla 1.8.3 on the launcher with built in java, and I have tried the 'repair' option in the Minecraft wizard.
Launcher Log: http://pastebin.com/dR6pGhfG
This is a repeat of a previous ticket that I forgot to include all data in.