Hi, uhm I really don't know if this is the right place where to ask for, but I'm gonna try... After having rebuilt the solution, it told me this error: path\to\x.vdproj This setup does not contain the .NET Framework which must be installed on the target machine by running dotnetfx.exe before this setup will install. You can find dotnetfx.exe on the Visual Studio .NET 'Windows Components Update' media. Dotnetfx.exe can be redistributed with your setup. I tried to do as there is written, but (and I could say obviously) It says that the framework is already installed on my machine ... What does exactly that error mean ?? Moreover, I noticed that there are error like these: - Could not copy temporary files to the output directory. - The file 'CopyrightAddIn.dll' cannot be copied to the run directory. This file is used by another process - The file 'CopyrightAddIn.pdb' cannot be copied to the run directory. This file is used by another process The problem is that It's the first time I use this system and in the tutorial I'm following the problem is not reported. Thanks, Francesco Biacca