game keeps crashing upon loading and i haven't been able to get on since last-night and i've been trying all day to get it to work ive have re-downloaded it several times and it still says sorry the game crashed and sorry for the inconvenience

[0807/161254:INFO:LauncherAppBrowser.cpp(24)] Work dir is C:\Users\Tracy\AppData\Roaming\.minecraft

[0807/161254:INFO:ClientHandler.cpp(182)] Creating launcher window.

[0807/161254:INFO:LauncherAppRenderer.cpp(110)] Javascript bridge extended.

[0807/161256:INFO:ClientHandler.cpp(846)] Preferences / startup: Read preferences

[0807/161256:INFO:ClientHandler.cpp(846)] Preferences: Wrote preferences

[0807/161256:INFO:ClientHandler.cpp(846)] Configurations: Loading profiles

[0807/161256:INFO:ClientHandler.cpp(846)] Configurations: Loading settings

[0807/161256:INFO:ClientHandler.cpp(846)] Session: Read authDB

[0807/161256:INFO:LocalVersionProvider.cpp(81)] Looking for installed versions in C:/Users\Tracy\AppData\Roaming\.minecraft\versions

[0807/161256:INFO:ClientHandler.cpp(846)] Updating server status

[0807/161256:INFO:GameController.cpp(216)] Reinstancing game callbacks...

[0807/161257:INFO:ClientHandler.cpp(846)] GameStarter: Previous instance(s) found

[0807/161257:INFO:ClientHandler.cpp(846)] Session: Validated token

[0807/161257:INFO:ClientHandler.cpp(846)] Preferences: Wrote preferences

[0807/161257:INFO:ClientHandler.cpp(846)] Session: Wrote authDB

[0807/161257:INFO:ClientHandler.cpp(846)] Changing view to: main.news

[0807/161257:INFO:ClientHandler.cpp(846)] Preferences: Wrote preferences

[0807/161310:INFO:ClientHandler.cpp(149)] Shutting down!