Did you set the Assembly attribute in the File element to ".net"?
<File Assembly=".net" KeyPath="yes" Id="MyAssembly.dl" Name="MyAssembly.dll" ProcessorArchitecture="msil"/> Also, as I recall, you need to create a separate directory for the GAC'd assembly. So you would have two <File> elements for the assembly with different parent directories. One to actually install it to disk, the other one to install it into the GAC. Make sure that the assembly is signed. You can't install unsigned assemblies into the GAC. Take a look at Aaron's blog as well: http://blogs.msdn.com/b/astebner/archive/2007/06/21/3450539.aspx Jacques On Tue, May 10, 2011 at 7:46 AM, Kurt Jensen <kurt.jen...@us.ophiropt.com>wrote: > we publish one assembly to the GAC. we find the MsiPublishAssemblies > action > in the log file. there is no error. > > but the assembly does not appear in the GAC. > > > > > > Action 7:17:10: MsiPublishAssemblies. Publishing assembly information > > MSI (s) (F8:2C) [07:17:10:015]: Executing op: > > AssemblyPublish(Feature=ProductFeature,Component={F23AAD89-8D5F-46C1-8792-C7988BEF6212}[~]2,AssemblyType=1,,AssemblyName=Spiricon.Interfaces.ConsoleService,version="1.0.0.0",culture="neutral",publicKeyToken="18293B57E84AEC4B",processorArchitecture="MSIL",) > > MsiPublishAssemblies: Application Context:Global, Assembly > > Name:Spiricon.Interfaces.ConsoleService,version="1.0.0.0",culture="neutral",publicKeyToken="18293B57E84AEC4B",processorArchitecture="MSIL" > > MSI (s) (F8:2C) [07:17:10:030]: Executing op: > ActionStart(Name=PublishFeatures,Description=Publishing Product > Features,Template=Feature: [1]) > > > > > > any ideas how to find out what is wrong? > > > > > > Kurt Jensen > > Senior Software Engineer > > Ophir-Spiricon LLC > > > > www.ophiropt.com/photonics <http://www.ophiropt.com/laser-measurement> > > > > > > The True Measure of Laser Performanceâ„¢ > > ------------------------------------------------------------------------------ > Achieve unprecedented app performance and reliability > What every C/C++ and Fortran developer should know. > Learn how Intel has extended the reach of its next-generation tools > to help boost performance applications - inlcuding clusters. > http://p.sf.net/sfu/intel-dev2devmay > _______________________________________________ > WiX-users mailing list > WiX-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wix-users > ------------------------------------------------------------------------------ Achieve unprecedented app performance and reliability What every C/C++ and Fortran developer should know. Learn how Intel has extended the reach of its next-generation tools to help boost performance applications - inlcuding clusters. http://p.sf.net/sfu/intel-dev2devmay _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users