Hi, I developed (using C# in Visual Studio 2012) an Add-In for MS Project 2010 (runs in 2007 too) and after build in release mode and execute my VSTO, it installs the Add-In and works fine. So, to release a more friendly app, I want to use an installer app (InstallShield Express project) for my Add-In and I built it, but when I run the InstallShield app the add-in does not install. My Application Files (InstallShield app) has the Primary output from the Add-In project, the manifest and vsto from release folder. I dont know what is happening. I go trought all the InstallShield installation (without errors and warning) and the add-in does not install. Points do consider: **When I build the InstallShield project, I receive these two warnings: ISEXP : warning : -7235: InstallShield could not create the software identification tag because the Tag Creator ID setting in the General Information view is empty. ISEXP : warning : -6245: One or more of the project's components contain .NET properties that require the .NET Framework. It is recommended that the release include the .NET Framework. Does it impact the installation process? **I dont changing anything on machine's registry with the intallation **Maybe this problem is about the OneClick certified? **When I execute the VSTO, appears a confirmation window to preceed the instalation (its about security). **When I execute the VSTO (on company name folder) generated after the execution of InstallShield, works fine and Add-In is installed. Tks. ... View more