i am getting the same problem:
5>------ Inizio compilazione: Progetto: g3dlite, Configurazione: Release Win32 ------
1> generating tbb.def file
1> win32-tbb-export.def
2> genrevision.cpp
3> adler32.c
3> compress.c
3> crc32.c
3> deflate.c
3> example.c
3> gzio.c
4> ACE.cpp
3> infback.c
4> ACE_crc32.cpp
4> ACE_crc_ccitt.cpp
4> ace_wchar.cpp
5> AABox.cpp
5> Box.cpp
5> Crypto.cpp
5> format.cpp
5> Matrix3.cpp
3> inffast.c
4> Activation_Queue.cpp
4> Active_Map_Manager.cpp
5> Plane.cpp
4> Addr.cpp
4> Argv_Type_Converter.cpp
5> RegistryUtil.cpp
5> System.cpp
1>C:\\Program Files (x86)\\MSBuild\\Microsoft.Cpp\\v4.0\\Microsoft.CppCommon.targets(151,5): error MSB4018: errore imprevisto dell'attività "CustomBuild".
1>C:\\Program Files (x86)\\MSBuild\\Microsoft.Cpp\\v4.0\\Microsoft.CppCommon.targets(151,5): error MSB4018: System.IO.IOException: Il processo non può accedere al file 'C:\\Users\\Giuseppe\\AppData\\Local\\Temp\\9f6230b6c74f4c6fad0bfe3c9db2cc94.cmd' perché è in uso da un altro processo.
1>C:\\Program Files (x86)\\MSBuild\\Microsoft.Cpp\\v4.0\\Microsoft.CppCommon.targets(151,5): error MSB4018: in System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
1>C:\\Program Files (x86)\\MSBuild\\Microsoft.Cpp\\v4.0\\Microsoft.CppCommon.targets(151,5): error MSB4018: in System.IO.File.Delete(String path)
1>C:\\Program Files (x86)\\MSBuild\\Microsoft.Cpp\\v4.0\\Microsoft.CppCommon.targets(151,5): error MSB4018: in Microsoft.Build.Utilities.ToolTask.Execute()
1>C:\\Program Files (x86)\\MSBuild\\Microsoft.Cpp\\v4.0\\Microsoft.CppCommon.targets(151,5): error MSB4018: in Microsoft.Build.CPPTasks.TrackedVCToolTask.Execute()
1>C:\\Program Files (x86)\\MSBuild\\Microsoft.Cpp\\v4.0\\Microsoft.CppCommon.targets(151,5): error MSB4018: in Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
1>C:\\Program Files (x86)\\MSBuild\\Microsoft.Cpp\\v4.0\\Microsoft.CppCommon.targets(151,5): error MSB4018: in Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask, Boolean& taskResult)
can still compile other projects of course, but at the end i get ========== Compilazione: 10 completate, 1 non riuscite, 0 aggiornate, 0 ignorate ========== ( 10 completed, 1 not completed). i am using vc++2010 express on win7 64 bit, i am getting this problem after updating the source, previous compiles where fine. i followed the guide step by step and i am not new to Mangos.
--edit--
i made a bit of cleaning with ccleaner (both registry and hard drive ) and now the build was successful. still don't get why this error occurs, i found some posts also on other forums but without a real solution.