Unity 5.4.2f1 Hangs on Project Launch

I've been developing a game in Unity 5 for the last several days and haven't had any problems until now. I shutdown to go to sleep and when I came back, the program started hanging when attempting to load the project. I've been reading over the error logs from %appdata% but haven't been able to find the cause. Any help would be greatly appreciated.

 LICENSE SYSTEM [20161018 5:43:33] No start/stop license dates set
 
 LICENSE SYSTEM [20161018 5:43:33] Next license update check is after 2016-10-19T03:20:03
 
 Built from '5.4/release' branch; Version is '5.4.2f1 (94e3a60ee258) revision 9757606'; Using compiler version '160040219'
 OS: 'Windows 10  (10.0.0) 64bit' Language: 'en' Physical Memory: 16338 MB
 BatchMode: 0, IsHumanControllingUs: 1, StartBugReporterOnCrash: 1, Is64bit: 1, IsPro: 0
 Initialize mono
 Mono path[0] = 'E:/Unity/Editor/Data/Managed'
 Mono path[1] = 'E:/Unity/Editor/Data/Mono/lib/mono/2.0'
 Mono path[2] = 'E:/Unity/Editor/Data/UnityScript'
 Mono config path = 'E:/Unity/Editor/Data/Mono/etc'
 Using monoOptions --debugger-agent=transport=dt_socket,embedding=1,defer=y,address=0.0.0.0:56644
 IsTimeToCheckForNewEditor: Update time 1476781009 current 1476783818
 E:/Projects/Left4Dead
 Loading GUID <-> Path mappings...0.000201 seconds
 Loading Asset Database...0.004878 seconds
 Audio: FMOD Profiler initialized on port 54900
 AssetDatabase consistency checks...0.020671 seconds
 Initialize engine version: 5.4.2f1 (94e3a60ee258)
 Refreshing native plugins compatible for Editor in 7.32 ms, found 0 plugins.
 GfxDevice: creating device client; threaded=1
 Direct3D:
     Version:  Direct3D 11.0 [level 11.0]
     Renderer: AMD Radeon R9 200 Series (ID=0x6798)
     Vendor:   ATI
     VRAM:     3053 MB
 Begin MonoManager ReloadAssembly
 Platform assembly: E:\Unity\Editor\Data\Managed\UnityEngine.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Managed\UnityEditor.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Managed\Unity.Locator.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\I18N.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\I18N.West.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Managed\Unity.DataContract.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\System.Core.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Managed\Unity.IvyParser.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\System.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\System.Xml.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\System.Configuration.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\PackageManager\Unity\PackageManager\5.4.2\Unity.PackageManager.dll (this message is harmless)
 Initializing Unity.PackageManager (PackageManager) v5.4.2 for Unity v5.4.2f1
 Setting StandaloneWindows v5.4.2 for Unity v5.4.2f1 to E:\Unity\Editor\Data\PlaybackEngines\windowsstandalonesupport
 Setting Advertisements v5.4.2 for Unity v5.4.2f1 to E:\Unity\Editor\Data\UnityExtensions\Unity\Advertisements
   UnityEngine.Advertisements.dll (Extension) GUID: 739bbd9f364b4268874f9fd86ab3beef
   Editor/UnityEditor.Advertisements.dll (Extension) GUID: 97decbdab0634cdd991f8d23ddf0dead
 Setting EditorTestsRunner v5.4.2 for Unity v5.4.2f1 to E:\Unity\Editor\Data\UnityExtensions\Unity\EditorTestsRunner
   Editor/nunit.framework.dll (Extension) GUID: 7cbab2be89b54486bbd23a6fe637d30e
   Editor/UnityEditor.EditorTestsRunner.dll (Extension) GUID: 3c0ad459c1534645b5d603b7cc258f97
 Setting GUISystem v5.4.2 for Unity v5.4.2f1 to E:\Unity\Editor\Data\UnityExtensions\Unity\GUISystem
   UnityEngine.UI.dll (Extension) GUID: f5f67c52d1564df4a8936ccd202a3bd8
   Editor/UnityEditor.UI.dll (Extension) GUID: 80a3616ca19596e4da0f10f14d241e9f
 Setting UNetHLAPI v5.4.2 for Unity v5.4.2f1 to E:\Unity\Editor\Data\UnityExtensions\Unity\Networking
   UnityEngine.Networking.dll (Extension) GUID: 870353891bb340e2b2a9c8707e7419ba
   Editor/UnityEditor.Networking.dll (Extension) GUID: 5f32cd94baa94578a686d4b9d6b660f7
 Setting TreeEditor v5.4.2 for Unity v5.4.2f1 to E:\Unity\Editor\Data\UnityExtensions\Unity\TreeEditor
   Editor/UnityEditor.TreeEditor.dll (Extension) GUID: adebbd281f1a4ef3a30be7f21937e02f
 Setting UnityAnalytics v5.4.2 for Unity v5.4.2f1 to E:\Unity\Editor\Data\UnityExtensions\Unity\UnityAnalytics
   UnityEngine.Analytics.dll (Extension) GUID: 852E56802EB941638ACBB491814497B0
 Setting UnityPurchasing v5.4.2 for Unity v5.4.2f1 to E:\Unity\Editor\Data\UnityExtensions\Unity\UnityPurchasing
   UnityEngine.Purchasing.dll (Extension) GUID: 8E0CD8ED44D4412CBE0642067ABC9E44
 Registering custom dll's ...
 Register platform support module: E:\Unity\Editor\Data\PlaybackEngines\windowsstandalonesupport/UnityEditor.WindowsStandalone.Extensions.dll
 Registered in 0.026612 seconds.
 Non platform assembly: E:\Projects\Left4Dead\Library\ScriptAssemblies\Assembly-CSharp-firstpass.dll (this message is harmless)
 Loading E:\Projects\Left4Dead\Library\ScriptAssemblies\Assembly-CSharp-firstpass.dll into Unity Child Domain
 Non platform assembly: E:\Projects\Left4Dead\Library\ScriptAssemblies\Assembly-CSharp.dll (this message is harmless)
 Loading E:\Projects\Left4Dead\Library\ScriptAssemblies\Assembly-CSharp.dll into Unity Child Domain
 Non platform assembly: E:\Projects\Left4Dead\Library\ScriptAssemblies\Assembly-CSharp-Editor.dll (this message is harmless)
 Loading E:\Projects\Left4Dead\Library\ScriptAssemblies\Assembly-CSharp-Editor.dll into Unity Child Domain
 Platform assembly: E:\Unity\Editor\Data\PackageManager\Unity\PackageManager\5.4.2\Unity.PackageManager.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\PackageManager\Unity\PackageManager\5.4.2\Unity.PackageManager.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\Advertisements\Editor\UnityEditor.Advertisements.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\Advertisements\Editor\UnityEditor.Advertisements.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\EditorTestsRunner\Editor\nunit.framework.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\EditorTestsRunner\Editor\nunit.framework.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\EditorTestsRunner\Editor\UnityEditor.EditorTestsRunner.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\EditorTestsRunner\Editor\UnityEditor.EditorTestsRunner.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\GUISystem\UnityEngine.UI.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\GUISystem\UnityEngine.UI.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\GUISystem\Editor\UnityEditor.UI.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\GUISystem\Editor\UnityEditor.UI.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\Networking\UnityEngine.Networking.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\Networking\UnityEngine.Networking.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\Networking\Editor\UnityEditor.Networking.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\Networking\Editor\UnityEditor.Networking.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\TreeEditor\Editor\UnityEditor.TreeEditor.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\TreeEditor\Editor\UnityEditor.TreeEditor.dll into Unity Child Domain
 Platform assembly: E:\Unity\Editor\Data\Managed\UnityEditor.Graphs.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\Managed\UnityEditor.Graphs.dll into Unity Child Domain
 Platform assembly: E:\Unity\Editor\Data\PlaybackEngines\windowsstandalonesupport\UnityEditor.WindowsStandalone.Extensions.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\PlaybackEngines\windowsstandalonesupport\UnityEditor.WindowsStandalone.Extensions.dll into Unity Child Domain
 Platform assembly: E:\Unity\Editor\Data\Managed\nunit.core.interfaces.dll (this message is harmless)
 Refreshing native plugins compatible for Editor in 0.10 ms, found 0 plugins.
 Preloading 0 native plugins for Editor in 0.00 ms.
 Platform assembly: E:\Unity\Editor\Data\Managed\Mono.Cecil.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Managed\Unity.SerializationLogic.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\UnityScript.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Managed\ICSharpCode.NRefactory.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\System.Xml.Linq.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Managed\nunit.core.dll (this message is harmless)
 Mono: successfully reloaded assembly
 - Completed reload, in  0.640 seconds
 Registering platform support modules:
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\Boo.Lang.Compiler.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\Boo.Lang.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\Boo.Lang.Parser.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\UnityScript.Lang.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\Mono.Security.dll (this message is harmless)
 Registered platform support modules in: 0.0953773s.
 Native extension for WindowsStandalone target not found
 Downloading http://update.unity3d.com/5.4/ivy.xml to E:\Users\Brett\AppData\Local\Temp\unity\29be316f-987f-4ff6-8583-1f56c4d8b1b9\ivy.xml
 Reloading assemblies after successful script compilation.
 Begin MonoManager ReloadAssembly
 Shutting down Remote Indexer
 Task failed: Downloader Task
 Platform assembly: E:\Unity\Editor\Data\Managed\UnityEngine.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Managed\UnityEditor.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Managed\Unity.Locator.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\I18N.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\I18N.West.dll (this message is harmless)
 Registering custom dll's ...
 Register platform support module: E:\Unity\Editor\Data\PlaybackEngines\windowsstandalonesupport/UnityEditor.WindowsStandalone.Extensions.dll
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\System.Core.dll (this message is harmless)
 Registered in 0.050909 seconds.
 Non platform assembly: E:\Projects\Left4Dead\Library\ScriptAssemblies\Assembly-CSharp-firstpass.dll (this message is harmless)
 Loading E:\Projects\Left4Dead\Library\ScriptAssemblies\Assembly-CSharp-firstpass.dll into Unity Child Domain
 Non platform assembly: E:\Projects\Left4Dead\Library\ScriptAssemblies\Assembly-CSharp.dll (this message is harmless)
 Loading E:\Projects\Left4Dead\Library\ScriptAssemblies\Assembly-CSharp.dll into Unity Child Domain
 Non platform assembly: E:\Projects\Left4Dead\Library\ScriptAssemblies\Assembly-CSharp-Editor.dll (this message is harmless)
 Loading E:\Projects\Left4Dead\Library\ScriptAssemblies\Assembly-CSharp-Editor.dll into Unity Child Domain
 Platform assembly: E:\Unity\Editor\Data\PackageManager\Unity\PackageManager\5.4.2\Unity.PackageManager.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\PackageManager\Unity\PackageManager\5.4.2\Unity.PackageManager.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\Advertisements\Editor\UnityEditor.Advertisements.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\Advertisements\Editor\UnityEditor.Advertisements.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\EditorTestsRunner\Editor\nunit.framework.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\EditorTestsRunner\Editor\nunit.framework.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\EditorTestsRunner\Editor\UnityEditor.EditorTestsRunner.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\EditorTestsRunner\Editor\UnityEditor.EditorTestsRunner.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\GUISystem\UnityEngine.UI.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\GUISystem\UnityEngine.UI.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\GUISystem\Editor\UnityEditor.UI.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\GUISystem\Editor\UnityEditor.UI.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\Networking\UnityEngine.Networking.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\Networking\UnityEngine.Networking.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\Networking\Editor\UnityEditor.Networking.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\Networking\Editor\UnityEditor.Networking.dll into Unity Child Domain
 Non platform assembly: E:\Unity\Editor\Data\UnityExtensions\Unity\TreeEditor\Editor\UnityEditor.TreeEditor.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\UnityExtensions\Unity\TreeEditor\Editor\UnityEditor.TreeEditor.dll into Unity Child Domain
 Platform assembly: E:\Unity\Editor\Data\Managed\UnityEditor.Graphs.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\Managed\UnityEditor.Graphs.dll into Unity Child Domain
 Platform assembly: E:\Unity\Editor\Data\PlaybackEngines\windowsstandalonesupport\UnityEditor.WindowsStandalone.Extensions.dll (this message is harmless)
 Loading E:\Unity\Editor\Data\PlaybackEngines\windowsstandalonesupport\UnityEditor.WindowsStandalone.Extensions.dll into Unity Child Domain
 Platform assembly: E:\Unity\Editor\Data\Managed\nunit.core.interfaces.dll (this message is harmless)
 Refreshing native plugins compatible for Editor in 0.10 ms, found 0 plugins.
 Preloading 0 native plugins for Editor in 0.00 ms.
 Platform assembly: E:\Unity\Editor\Data\Managed\Mono.Cecil.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Managed\Unity.SerializationLogic.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Managed\Unity.DataContract.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\UnityScript.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Managed\ICSharpCode.NRefactory.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\System.Xml.Linq.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Managed\Unity.IvyParser.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Managed\nunit.core.dll (this message is harmless)
 Mono: successfully reloaded assembly
 - Completed reload, in  0.382 seconds
 Initializing Unity.PackageManager (PackageManager) v5.4.2 for Unity v5.4.2f1
 Registering platform support modules:
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\Boo.Lang.Compiler.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\Boo.Lang.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\Boo.Lang.Parser.dll (this message is harmless)
 Platform assembly: E:\Unity\Editor\Data\Mono\lib\mono\2.0\UnityScript.Lang.dll (this message is harmless)
 Registered platform support modules in: 0.0494453s.
 Native extension for WindowsStandalone target not found
 Validating Project structure ... 0.002939 seconds.
 Refresh: detecting if any assets need to be imported or removed ... Refresh: elapses 0.005493 seconds (Nothing changed)
 Warming cache for 203 main assets: 0.001674 seconds elapsed
 Initializing Unity extensions:
  'E:/Unity/Editor/Data/UnityExtensions/Unity/UnityAnalytics/UnityEngine.Analytics.dll' 
  'E:/Unity/Editor/Data/UnityExtensions/Unity/GUISystem/UnityEngine.UI.dll' 
  'E:/Unity/Editor/Data/UnityExtensions/Unity/Networking/Editor/UnityEditor.Networking.dll' 
  'E:/Unity/Editor/Data/UnityExtensions/Unity/TreeEditor/Editor/UnityEditor.TreeEditor.dll' 
  'E:/Unity/Editor/Data/UnityExtensions/Unity/EditorTestsRunner/Editor/UnityEditor.EditorTestsRunner.dll' 
  'E:/Unity/Editor/Data/UnityExtensions/Unity/Networking/UnityEngine.Networking.dll' 
  'E:/Unity/Editor/Data/UnityExtensions/Unity/Advertisements/Editor/UnityEditor.Advertisements.dll' 
  'E:/Unity/Editor/Data/UnityExtensions/Unity/GUISystem/Editor/UnityEditor.UI.dll' 
  'E:/Unity/Editor/Data/UnityExtensions/Unity/UnityPurchasing/UnityEngine.Purchasing.dll' 
  'E:/Unity/Editor/Data/UnityExtensions/Unity/EditorTestsRunner/Editor/nunit.framework.dll' 
  'E:/Unity/Editor/Data/UnityExtensions/Unity/Advertisements/UnityEngine.Advertisements.dll' 
 Load scene 'Assets/test.unity' time: 0.010239 ms 
 Unloading 94 Unused Serialized files (Serialized files now loaded: 0)