Package Failed, Unknown Error

I packaged my project for Windows, 3-4 times today and suddenly I can’t anymore. It gives this:

MainFrameActions: Packaging (Windows (64-bit)): BuildCommand.Execute: ERROR: BUILD FAILED
MainFrameActions: Packaging (Windows (64-bit)): Program.Main: ERROR: AutomationTool terminated with exception:
MainFrameActions: Packaging (Windows (64-bit)): Program.Main: ERROR: Exception in Win.Automation: Found invalid data while decoding.
MainFrameActions: Packaging (Windows (64-bit)): Stacktrace:    at GroupIconResource.ReadIconHeader(BinaryReader Reader)
MainFrameActions: Packaging (Windows (64-bit)):    at GroupIconResource.FromIco(String FileName)
MainFrameActions: Packaging (Windows (64-bit)):    at BaseWinPlatform.StageBootstrapExecutable(DeploymentContext SC, String ExeName, String TargetFile, String StagedRelativeTargetPath, String StagedArguments)
MainFrameActions: Packaging (Windows (64-bit)):    at BaseWinPlatform.GetFilesToDeployOrStage(ProjectParams Params, DeploymentContext SC)
MainFrameActions: Packaging (Windows (64-bit)):    at Win64Platform.GetFilesToDeployOrStage(ProjectParams Params, DeploymentContext SC)
MainFrameActions: Packaging (Windows (64-bit)):    at Project.CreateStagingManifest(ProjectParams Params, DeploymentContext SC)
MainFrameActions: Packaging (Windows (64-bit)):    at Project.CopyBuildToStagingDirectory(ProjectParams Params)
MainFrameActions: Packaging (Windows (64-bit)):    at BuildCookRun.DoBuildCookRun(ProjectParams Params)
MainFrameActions: Packaging (Windows (64-bit)):    at BuildCommand.Execute()
MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.Automation.Execute(List`1 CommandsToExecute, CaselessDictionary`1 Commands)
MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.Automation.Process(String[] CommandLine)
MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.Program.MainProc(Object Param)
MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.Inter
MainFrameActions: Packaging (Windows (64-bit)): nalUtils.RunSingleInstance(Action`1 Main, Object Param)
MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.Program.Main()
MainFrameActions: Packaging (Windows (64-bit)): ProcessManager.KillAll: Trying to kill 0 spawned processes.
MainFrameActions: Packaging (Windows (64-bit)): Program.Main: AutomationTool exiting with ExitCode=Error_Unknown
MainFrameActions: Packaging (Windows (64-bit)): Domain_ProcessExit
MainFrameActions: Packaging (Windows (64-bit)): copying UAT log files...
MainFrameActions: Packaging (Windows (64-bit)): RunUAT.bat ERROR: AutomationTool was unable to run successfully.
MainFrameActions: Packaging (Windows (64-bit)): BUILD FAILED
PackagingResults:Error: Error Unknown Error

Please help me, I need the package today.

I transferred Content file to another blank project and its working now. I don’t know if this is the ultimate solution but it gives what I need.