Hi , I came across the problem just like yours -----“Could not find definition for module ‘TestingEditor’, (referenced via TestingEditor.Target.cs)”,and my refered the article,and i found out that in “xxxEditor.Target.cs” just do not include “xxxEditor” ,then the error disappered. In xxEditor.Target.cs like this ExtraModuleNames.AddRange(new string[] { "xx" });
in xx.Targer.cs ExtraModuleNames.AddRange( new string[] { "xx" , "xxEditor" } );
Hope it can help!