[wix-users] AllowDuplicateDirectoryIds

Boaz Lev boazlev at hotmail.com
Tue Mar 26 14:21:37 PDT 2019

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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