Ok, I have resolved. I needs only to add the VSTOStorageWrapper.Interop from the GAC.
I have understand many things on VSTO and assemblies now :-)
thanks for your patience
OOOpss.....sorry I didn't understand that dependecies was of your app. Ok I think now the problem is only Microsoft
Copyright ¸ Microsoft 2006
Info: Loaded 1 assemblies for reflection and 3 dependency assemblies.
Error: Unresolved assembly reference: VSTOStorageWrapper.Interop (VSTOStorageWrapper.Interop, Version=18.104.22.168, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a) required by Microsoft.Office.Tools.Common
Last step completed in 00:00:10.0628
I have added the assembly but there is the error too. Ok I say you this for your cultur on VSTO project and SandCastle.
Thanks and sorry for my misunderstanding
There is a Dependencies property in the help file builder project. Add the dependent assemblies to it
NOT the list of assemblies to document.