[wix-users] AllowDuplicateDirectoryIds

Rob Mensching rob at firegiant.com
Tue Mar 26 20:08:48 PDT 2019

First, I've ever heard of that problem before. Only guess is to make sure you're pointing at the correct WixTasks.dll since you've customized the install path.
 Short replies here. Complete answers over there: http://www.firegiant.com/

-----Original Message-----
From: wix-users <wix-users-bounces at lists.wixtoolset.org> On Behalf Of Boaz Lev via wix-users
Sent: Tuesday, March 26, 2019 2:22 PM
To: wix-users at lists.wixtoolset.org
Cc: Boaz Lev <boazlev at hotmail.com>
Subject: [wix-users] AllowDuplicateDirectoryIds

I am trying to build an installer using It fails running Light with this error message:

C:\MyProj\Ext\Wix\\wix2010.targets(2439,7): error MSB4064: The "AllowDuplicateDirectoryIds" parameter is not supported by the "Light" task. Verify the parameter exists on the task, and it is a settable public instance property.
C:\MyProj\Ext\Wix\\wix2010.targets(2435,5): error MSB4063: The "Light" task could not be initialized with its input parameters.

I checked that the WixTasks.dll in that particular directory actually has that property on the Light class. Additionally, my project has these properties set in the project file:


I have tried searching online, but not really found anything useful. Any ideas?


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