Windows .exe [SOLVED] Launcher 1.3.5 Failure to Launch Modpacks

[Zaes]

Since updating to the 1.3.5 launcher, every modpack I use (DW20 1.6.4 and Magic World 2) does not load. The console spits out an error saying:

Error: Could not find or load main class net.minecraft.launchwrapper.Launch

I have tried removing and re-installing the launcher, but to no avail

Console Log:

Spoiler

[14:25:51] [INFO] LaunchFrame.main:185: FTBLaunch starting up (version 1.3.5)
[14:25:51] [INFO] LaunchFrame.main:186: Java version: 1.7.0_45
[14:25:51] [INFO] LaunchFrame.main:187: Java vendor: Oracle Corporation
[14:25:51] [INFO] LaunchFrame.main:188: Java home: C:\Program Files\Java\jre7
[14:25:51] [INFO] LaunchFrame.main:189: Java specification: Java Virtual Machine Specification version: 1.7 by Oracle Corporation
[14:25:51] [INFO] LaunchFrame.main:191: Java vm: Java HotSpot(TM) 64-Bit Server VM version: 24.45-b08 by Oracle Corporation
[14:25:51] [INFO] LaunchFrame.main:192: OS: amd64 Windows 7 6.1
[14:25:51] [INFO] LaunchFrame.main:193: Launcher Install Dir: C:\Users\Matt\Creative Cloud Files\My Games\Minecraft\FTB
[14:25:51] [INFO] LaunchFrame.main:194: System memory: 4141M free, 6126M total
[14:25:51] [INFO] JGoogleAnalyticsTracker$2.run:483: AnalyticsBackgroundThread started
[14:25:52] [INFO] LocaleUpdater.run:67: [i18n] Checking for updates ...
[14:25:52] [INFO] I18N.setLocale:127: [i18n] enUS English language file loaded!
[14:25:52] [INFO] JavaFinder.parseWinJavaVersion:103: The FTB Launcher has found the following Java versions installed:
[14:25:52] [INFO] JavaFinder.parseWinJavaVersion:105: Java Version: 1.7.0_45 sorted as: 1.7.0_45 64 Bit Java at : C:\Program Files\Java\jre7\bin\java.exe
[14:25:52] [INFO] JavaFinder.parseWinJavaVersion:105: Java Version: 1.7.0_45 sorted as: 1.7.0_45 64 Bit Java at : C:\Program Files\Java\jdk1.7.0_45\bin\java.exe
[14:25:52] [INFO] JavaFinder.parseWinJavaVersion:105: Java Version: 1.7.0_45 sorted as: 1.7.0_45 64 Bit Java at : C:\Windows\system32\java.exe
[14:25:52] [INFO] JavaFinder.parseWinJavaVersion:124: Preferred: Java Version: 1.7.0_45 sorted as: 1.7.0_45 64 Bit Java at : C:\Program Files\Java\jre7\bin\java.exe
[14:25:52] [INFO] OptionsPane.<init>:157: [i18n] Added 0 enUS to options pane
[14:25:52] [INFO] I18N.setLocale:127: [i18n] enUS English language file loaded!
[14:25:53] [INFO] AuthlibDLWorker.doInBackground:62: Downloading Jars
[14:25:53] [INFO] LocaleUpdater.run:80: [i18n] remoteVer = 10
[14:25:53] [INFO] LocaleUpdater.run:93: [i18n] localVer = 10
[14:25:53] [INFO] LocaleUpdater.run:98: [i18n] Files are up to date
[14:25:53] [INFO] I18N.addFiles:104: [i18n] Fallback enUS loaded
[14:25:54] [ERROR] LauncherConsole$OutputOverride.write:92: From Console: Exception in thread "Thread-1"
[14:25:54] [ERROR] LauncherConsole$OutputOverride.write:92: From Console: java.lang.NullPointerException
[14:25:54] [ERROR] LauncherConsole$OutputOverride.write:92: From Console: at net.ftb.gui.dialogs.AdvancedOptionsDialog.setDownloadServers(AdvancedOptionsDialog.java:109)
[14:25:54] [ERROR] LauncherConsole$OutputOverride.write:92: From Console: at net.ftb.util.DownloadUtils.run(DownloadUtils.java:307)
[14:25:56] [INFO] AuthlibDLWorker.doInBackground:68: Adding Authlib to Classpath
[14:25:58] [INFO] ModpackLoader.run:58: Loading modpack information for modpacks.xml...
[14:25:58] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 1 (Monster)
[14:25:58] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 2 (Direwolf20)
[14:25:58] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 3 (Horizons)
[14:25:58] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 4 (Tech World 2)
[14:25:58] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 5 (Magic World 2)
[14:25:58] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 6 (FTBLite2)
[14:25:58] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 7 (FTB Unleashed)
[14:25:58] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 8 (FTB Ultimate)
[14:25:58] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 9 (FTB Lite)
[14:25:58] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 10 (MagicFarm2)
[14:25:58] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 11 (New World Mod Pack)
[14:25:58] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 12 (Voxel)
[14:25:58] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 13 (Infamy)
[14:25:58] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 14 (Lapito's Galacticraft Modpack)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 15 (Direwolf20 1.5 v2)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 16 (Direwolf20 Pack)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 17 (MindCrack Pack)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 18 (YogCraft Modpack)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 19 (FTB Unhinged)
[14:25:59] [ERROR] FileOutputStream.open:-2->Settings.save:73: Failed to save settings: java.io.FileNotFoundException: C:\Users\Matt\AppData\Roaming\ftblauncher\ftblaunch.cfg (The requested operation cannot be performed on a file with a user-mapped section open)
java.io.FileOutputStream.open(Native Method)
java.io.FileOutputStream.<init>(Unknown Source)
java.io.FileOutputStream.<init>(Unknown Source)
net.ftb.data.Settings.save(Settings.java:71)
net.ftb.gui.panes.ModpacksPane$5.actionPerformed(ModpacksPane.java:231)
javax.swing.JComboBox.fireActionEvent(Unknown Source)
javax.swing.JComboBox.contentsChanged(Unknown Source)
javax.swing.AbstractListModel.fireContentsChanged(Unknown Source)
javax.swing.DefaultComboBoxModel.setSelectedItem(Unknown Source)
javax.swing.DefaultComboBoxModel.addElement(Unknown Source)
javax.swing.JComboBox.addItem(Unknown Source)
net.ftb.gui.panes.ModpacksPane.updatePacks(ModpacksPane.java:368)
net.ftb.gui.panes.ModpacksPane.onModPackAdded(ModpacksPane.java:318)
net.ftb.data.ModPack.addPack(ModPack.java:84)
net.ftb.workers.ModpackLoader.run(ModpackLoader.java:89)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 20 (RPG Immersion Pack)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 21 (BronyModPack)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 22 (Ampz Modpack)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 23 (VoxelModPack)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 24 (Magic Farm)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 25 (Magic World)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 26 (Tech World)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 27 (Pax Challenge Pack)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 28 (Feed The Beast Retro SSP)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 29 (Feed The Beast Retro SMP)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 30 (Slow's Stream Pack)
[14:25:59] [INFO] ModpacksPane.onModPackAdded:314: Adding pack 31 (Feed The Beast Beta Pack A)
[14:25:59] [INFO] MapLoader.run:41: loading map information...
[14:25:59] [INFO] TexturePackLoader.run:41: loading texture pack information...
[14:26:00] [INFO] MapsPane.onMapAdded:226: Adding map 1 (Direwolf20 Map Ep.0)
[14:26:00] [INFO] MapsPane.onMapAdded:226: Adding map 2 (FTB Pax Challenge)
[14:26:00] [INFO] MapsPane.onMapAdded:226: Adding map 3 (Direwolf20 Map Ep.0)
[14:26:00] [INFO] MapsPane.onMapAdded:226: Adding map 4 (Direwolf20 Map Ep.10)
[14:26:00] [INFO] MapsPane.onMapAdded:226: Adding map 5 (Direwolf20 Map Ep.20)
[14:26:00] [INFO] MapsPane.onMapAdded:226: Adding map 6 (Direwolf20 Map Ep.30)
[14:26:00] [INFO] MapsPane.onMapAdded:226: Adding map 7 (Direwolf20 Map Ep.40)
[14:26:00] [INFO] MapsPane.onMapAdded:226: Adding map 8 (Direwolf20 Map Ep.50)
[14:26:00] [INFO] MapsPane.onMapAdded:226: Adding map 9 (Direwolf20 Map Ep.80)
[14:26:00] [INFO] MapsPane.onMapAdded:226: Adding map 10 (FTB Normal)
[14:26:00] [INFO] MapsPane.onMapAdded:226: Adding map 11 (FTB Insanity)
[14:26:00] [INFO] TexturepackPane.onTexturePackAdded:221: Adding texture pack 1 (Soartex Fanver)
[14:26:00] [INFO] TexturepackPane.onTexturePackAdded:221: Adding texture pack 2 (JohnSmith Technicians Remix)
[14:26:00] [INFO] TexturepackPane.onTexturePackAdded:221: Adding texture pack 3 (Familiar yet Different)
[14:26:00] [INFO] TexturepackPane.onTexturePackAdded:221: Adding texture pack 4 (Love And Tolerance)
[14:26:00] [INFO] TexturepackPane.onTexturePackAdded:221: Adding texture pack 5 (Jadedcat Mixpack)
[14:26:07] [INFO] LaunchFrame.doLogin:572: Logging in...
[14:26:07] [INFO] AuthlibHelper.authenticateWithAuthlib:17: Beginning authlib authentication attempt
[14:26:07] [INFO] AuthlibHelper.authenticateWithAuthlib:19: successfully created YggdrasilAuthenticationService
[14:26:08] [INFO] LoginWorker.doInBackground:54: using Authlib authentication data
[14:26:08] [INFO] LaunchFrame$13.done:631: Login complete.
[14:26:14] [INFO] MinecraftLauncherNew.syncAssets:260: Syncing Assets:
[14:26:17] [INFO] MinecraftLauncherNew.launchMinecraft:68: Java Path: C:\Program Files\Java\jre7\bin\javaw.exe
[14:26:17] [INFO] MinecraftLauncherNew.setMemory:156: Setting MinMemory to 256
[14:26:17] [INFO] MinecraftLauncherNew.setMemory:158: Setting MaxMemory to 4096
[14:26:17] [INFO] MinecraftLauncherNew.launchMinecraft:92: Defaulting PermSize to 256m
Error: Could not find or load main class net.minecraft.launchwrapper.Launch

 

[Tristam Izumi]

I have a question about your install directory:

[14:25:51] [INFO] LaunchFrame.main:193: Launcher Install Dir: C:\Users\Matt\Creative Cloud Files\My Games\Minecraft\FTB

What exactly is Creative Cloud Files? Is it a cloud storage "drive" that's linked to a folder in your user folder? If so, that may be what's causing the issue; try installing FTB to a local hard drive and see if that fixes it.

Another thing to try is to add whatever folder you have FTB install to into the exclusions for your antivirus. If you're unsure how to do this, try Googling "add exception to <antivirus name>".

 

[Zaes]

I have a question about your install directory:

What exactly is Creative Cloud Files? Is it a cloud storage "drive" that's linked to a folder in your user folder? If so, that may be what's causing the issue; try installing FTB to a local hard drive and see if that fixes it.

Another thing to try is to add whatever folder you have FTB install to into the exclusions for your antivirus. If you're unsure how to do this, try Googling "add exception to <antivirus name>".

Ever heard of Dropbox or Microsoft's Skydrive? Creative Cloud is Adobe's Cloud service.

I have been running FTB through cloud folders since 1.5.2, and I only run the cloud software to sync when FTB is not running (ie, its just another folder location on my C: drive. I know that java is an exception in my antivirus software as I had to set that up when I first started using FTB. This launcher bug has only started to occur when I updated from 1.3.4 to 1.3.5. I tried to use the 1.3.4 version from a backup and I still encounter the problem.

 

[Tristam Izumi]

Ever heard of Dropbox or Microsoft's Skydrive? Creative Cloud is Adobe's Cloud service.

Ah. I try to avoid all of those in the first place. Hence me not being aware of yet another one.

Not sure why it's been popping up recently, but a number of people have had to specifically add their FTB install location to their antivirus exceptions to get it to play nice. Those people have had the same error (the "(The requested operation cannot be performed on a file with a user-mapped section open)" portion), and the fix was to add their FTB install folder to their exclusions.

 

[Zaes]

Ah. I try to avoid all of those in the first place. Hence me not being aware of yet another one.

Not sure why it's been popping up recently, but a number of people have had to specifically add their FTB install location to their antivirus exceptions to get it to play nice. Those people have had the same error (the "(The requested operation cannot be performed on a file with a user-mapped section open)" portion), and the fix was to add their FTB install folder to their exclusions.

Well, I added the FTB launcher to the exceptions list anyway, as well as deleted the AppData/Roaming/ftblauncher folder and clicking the force update button (updated the launcher to 1.3.5 again), and the launcher now works as it should

Thanks!