I don't know how this happened but it did.

Launcher Log:

[12:39:34 INFO]: Minecraft Launcher 1.6.73 (through bootstrap 100) started on windows...
[12:39:34 INFO]: Current time is Jan 26, 2017 12:39:34 PM
[12:39:34 INFO]: System.getProperty('os.name') == 'Windows 10'
[12:39:34 INFO]: System.getProperty('os.version') == '10.0'
[12:39:34 INFO]: System.getProperty('os.arch') == 'amd64'
[12:39:34 INFO]: System.getProperty('java.version') == '1.8.0_25'
[12:39:34 INFO]: System.getProperty('java.vendor') == 'Oracle Corporation'
[12:39:34 INFO]: System.getProperty('sun.arch.data.model') == '64'
[12:39:34 INFO]: proxy == DIRECT
[12:39:34 INFO]: JFX is already initialized
[12:39:36 INFO]: Refreshing local version list...
[12:39:36 INFO]: Refreshing remote version list...
[12:39:37 INFO]: Refresh complete.
[12:39:37 INFO]: Loaded 2 profile(s); selected 'SmoothWarrior'
[12:39:37 INFO]: Refreshing auth...
[12:39:37 INFO]: Logging in with access token

some time later.

[12:40:02 FATAL]: Fatal error launching game. Report this to http://bugs.mojang.com please!
java.io.FileNotFoundException: File 'C:\Users\Owner\AppData\Roaming\.minecraft\assets\indexes\1.10.json' does not exist
at org.apache.commons.io.FileUtils.openInputStream(FileUtils.java:299) ~[launcher.jar:1.6.73]
at org.apache.commons.io.FileUtils.readFileToString(FileUtils.java:1711) ~[launcher.jar:1.6.73]
at net.minecraft.launcher.Launcher.cleanupOrphanedAssets(Launcher.java:299) ~[launcher.jar:1.6.73]
at net.minecraft.launcher.Launcher.performCleanups(Launcher.java:541) ~[launcher.jar:1.6.73]
at net.minecraft.launcher.game.MinecraftGameRunner.launchGame(MinecraftGameRunner.java:231) ~[launcher.jar:1.6.73]
at com.mojang.launcher.game.runner.AbstractGameRunner.onDownloadJobFinished(AbstractGameRunner.java:186) [launcher.jar:1.6.73]
at com.mojang.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:122) [launcher.jar:1.6.73]
at com.mojang.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:12) [launcher.jar:1.6.73]
at com.mojang.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:86) [launcher.jar:1.6.73]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_25]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_25]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_25]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_25]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_25]
[12:40:05 ERROR]: Game ended with bad state (exit code -1073740791)
[12:40:05 INFO]: Ignoring visibility rule and showing launcher due to a game crash
[12:40:05 INFO]: Deleting C:\Users\Owner\AppData\Roaming\.minecraft\versions\1.11.2\1.11.2-natives-999723349329418
[12:40:05 WARN]: Couldn't delete C:\Users\Owner\AppData\Roaming\.minecraft\versions\1.11.2\1.11.2-natives-999723349329418 - scheduling for deletion upon exit