Ever since i'v upgraded to 4.7 packing is failed

This is the log:
MainFrameActions: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2015.02.28-08.01.47:047][ 0]LogCookCommandlet:Display: Cooking /Game/Elemental/Environment/Lava_Assets/Materials/M_LavaFlow_01 → C:/Doom2RemakeUE47/Saved/Cooked/WindowsNoEditor/Doom2Remake/Content/Elemental/Environment/Lava_Assets/Materials/M_LavaFlow_01.uasset
MainFrameActions: Packaging (Windows (64-bit)): CommandUtils.Run: Run: Took 557.0868635s to run UE4Editor-Cmd.exe, ExitCode=3
MainFrameActions: Packaging (Windows (64-bit)): Project.Cook: Cook failed. Deleting cooked data.
MainFrameActions: Packaging (Windows (64-bit)): ErrorReporter.Error: ERROR: AutomationTool error: Cook failed.
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 AutomationScripts.Automation: BUILD FAILED: Failed while running Cook for C:\Doom2RemakeUE47\Doom2Remake.uproject; see log G:\Downloads_2014\UnrealEngine-4.7.0-release\UnrealEngine-4.7.0-release\Engine\Programs\AutomationT
MainFrameActions: Packaging (Windows (64-bit)): ool\Saved\Logs\Cook.txt
MainFrameActions: Packaging (Windows (64-bit)): Stacktrace: at Project.Cook(ProjectParams Params) in g:\Downloads_2014\UnrealEngine-4.7.0-release\UnrealEngine-4.7.0-release\Engine\Source\Programs\AutomationTool\Scripts\CookCommand.Automation.cs:line 171
MainFrameActions: Packaging (Windows (64-bit)): at BuildCookRun.DoBuildCookRun(ProjectParams Params) in g:\Downloads_2014\UnrealEngine-4.7.0-release\UnrealEngine-4.7.0-release\Engine\Source\Programs\AutomationTool\Scripts\BuildCookRun.Automation.cs:line 252
MainFrameActions: Packaging (Windows (64-bit)): at BuildCommand.Execute() in g:\Downloads_2014\UnrealEngine-4.7.0-release\UnrealEngine-4.7.0-release\Engine\Source\Programs\AutomationTool\BuildCommand.cs:line 37
MainFrameActions: Packaging (Windows (64-bit)): at AutomationTool.Automation.Execute(List1 CommandsToExecute, CaselessDictionary1 Commands) in g:\Downloads_2014\UnrealEngine-4.7.0-release\UnrealEngine-4.7.0-release\Engine\Source\Programs\AutomationTool\Automation.cs:line 380
MainFrameActions: Packaging (Windows (64-bit)): at AutomationTool.Automation.Process(String[] CommandLine) in g:\Downloads_2014\UnrealEngine-4.7.0-release\UnrealEngine-4.7.0-release\Engine\Source\Programs\AutomationTool\Automation.cs:line 352
MainFrameActions: Packaging (Windows (64-bit)): at AutomationTool.Program.MainProc(Object Param) in g:\Downloads_2014\UnrealEngine-4.7.0-release\UnrealEngine-4.7.0-release\Engine\Source\Programs\AutomationTool\Program.cs:line 168
MainFrameActions: Packaging (Windows (64-bit)): at AutomationTool.InternalUtils.RunSingleInstance(MainProc Main, Object Param) in g:\Downloads_2014\UnrealEngine-4.7.0-release\UnrealEngine-4.7.0-release\Engine\Source\Programs\AutomationTool\Utils.cs:line 705
MainFrameActions: Packaging (Windows (64-bit)): at AutomationTool.Program.Main() in g:\Downloads_2014\UnrealEngine-4.7.0-release\UnrealEngine-4.7.0-release\Engine\Source\Programs\AutomationTool\Program.cs:line 115
MainFrameActions: Packaging (Windows (64-bit)): Program.Main: ERROR: BUILD FAILED: Failed while running Cook for C:\Doom2RemakeUE47\Doom2Remake.uproject; see log G:\Downloads_2014\UnrealEngine-4.7.0-release\UnrealEngine-4.7.0-release\Engine\Programs\AutomationTool\Saved\Logs\Cook.txt
MainFrameActions: Packaging (Windows (64-bit)): ProcessManager.KillAll: Trying to kill 0 spawned processes.
MainFrameActions: Packaging (Windows (64-bit)): Program.Main: AutomationTool exiting with ExitCode=25
MainFrameActions: Packaging (Windows (64-bit)): Domain_ProcessExit
MainFrameActions: Packaging (Windows (64-bit)): ProcessManager.KillAll: Trying to kill 0 spawned processes.
MainFrameActions: Packaging (Windows (64-bit)): AutomationToolLauncher exiting with ExitCode=25
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

Any idea what could be wrong ?

This is the full log ( Cook.txt ):
link text

Did you solve this problem?

Yep i’v solved it, had some broken links and blueprint errors after moving the project.

Can you elaborate? What do you mean by broken links?

I’v modified the sky_sphere ( not sure about the exact name ), add some functionality into it, and when i’v installed the new unreal version, it deleted my modified version and replaced it with the new version, so all the blueprints that called it was broken.