Re: [WiX-devs] light.exe : error LGHT0001 : Item has already been added. Key in dictionary

[scubasteve2 <Ste...@nu...>]

I have found that this is caused by adding the entries from a heat extraction
of a COM library as well as some extra-manual RegistryValue elements for the
interfaces under HKCR. Example causing the exception:                                      
To fix it simply put in your component only what heat.exe generates.  I
would put business-logic specific registry entries in another component and
fragment. 



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