heat crashes during harvesting dll files

[wixbot]

Heat crashes during harvesting several dll files. The files provide COM servers implemented with ATL including selfregister functionality. The files are compiled with Visual Studio 2008.

Heat throws a NullReferenceException with the following output (message text is german):

heat.exe : error HEAT0001 : Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt.

Exception Type: System.NullReferenceException

Stack Trace:
   bei Microsoft.Tools.WindowsInstallerXml.Extensions.UtilFinalizeHarvesterMutator.MutateComponents()
   bei Microsoft.Tools.WindowsInstallerXml.Extensions.UtilFinalizeHarvesterMutator.Mutate(Wix wix)
   bei Microsoft.Tools.WindowsInstallerXml.Mutator.Mutate(Wix wix)
   bei Microsoft.Tools.WindowsInstallerXml.Tools.Heat.Run(String[] args)

Unbehandelte Ausnahme: System.NullReferenceException: Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt.
   bei Microsoft.Tools.WindowsInstallerXml.Extensions.UtilFinalizeHarvesterMutator.MutateComponents()
   bei Microsoft.Tools.WindowsInstallerXml.Extensions.UtilFinalizeHarvesterMutator.Mutate(Wix wix)
   bei Microsoft.Tools.WindowsInstallerXml.Mutator.Mutate(Wix wix)
   bei Microsoft.Tools.WindowsInstallerXml.Tools.Heat.Run(String[] args)
   bei Microsoft.Tools.WindowsInstallerXml.Tools.Heat.Main(String[] args)

The problem is located in file "src\ext\UtilExtension\wixext\UtilFinalizeHarvesterMutator.cs" inline 269:
string[] parts = registryValue.Key.Split('\\');

The following change works for me:
string[] parts = registryValue.Key != null ? registryValue.Key.Split('\\') : new string[0];

Originally opened by tne

[wixbot]

Which version of WiX are you using?

Originally posted by barnson

[wixbot]

I use version 3.8.1128.0.

Originally posted by tne

[wixbot]

AssignedTo set to bobarnson
Release changed from v3.8 to v3.9

[wixbot]

Fixed in wixtoolset/wix3#1

Originally posted by barnson
Resolution set to fixed
Status changed from Open to Resolved