为什么我的VisualStudio2008SP1宏可以运行

我一辈子都搞不明白为什么我的构建事件宏不再启动了。有什么想法吗?

Option Strict Off
Option Explicit Off
Imports System
Imports EnvDTE
Imports EnvDTE80
Imports EnvDTE90
Imports System.Diagnostics

Public Module EnvironmentEvents

    Private Sub BuildEvents_OnBuildProjConfigDone(ByVal Project As String, _
                                                ByVal ProjectConfig As String, _
                                                ByVal Platform As String, _
                                                ByVal SolutionConfig As String, _
                                                ByVal Success As Boolean) _
                                    Handles BuildEvents.OnBuildProjConfigDone
        If Success = False Then
            'The build failed...cancel any further builds.
            DTE.ExecuteCommand("Build.Cancel")
        End If
    End Sub
End Module