Hi, Both a colleague and I are having the same error calling GetProductProperty from a Managed custom action. Is this a know issue? If not, what is the correct usage? We both use Visual Studio 2008 and the latest version of the WIX3 build (v3.0.4624.0). Below is a snippet from the log : Action 15:37:53: TestCA. Action start 15:37:53: TestCA. SFXCA: Extracting custom action to temporary directory: C:\WINDOWS\Installer\MSIF3F.tmp-\ SFXCA: Binding to CLR version v2.0.50727 Calling custom action CustomAction1!CustomAction1.CustomActions.CustomAction1 Begin CustomAction1 Exception thrown by custom action: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> Microsoft.Deployment.WindowsInstaller.InvalidHandleException: The handle is invalid. at Microsoft.Deployment.WindowsInstaller.Session.GetProductProperty(String property) at CustomAction1.CustomActions.CustomAction1(Session session) --- End of inner exception stack trace --- at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner) at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object parameters, CultureInfo culture, Boolean skipVisibilityChecks) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object parameters, CultureInfo culture) at Microsoft.Deployment.WindowsInstaller.CustomActionProxy.InvokeCustomActi on(Int32 sessionHandle, String entryPoint, IntPtr remotingDelegatePtr) Action ended 15:37:54: TestCA. Return value 3. Any help would be much appreciated. Thank you Simon
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