This is the Bentley project template, which comes already with a huge number of references and even missed some. Because when i created the project and fixed all the references, it still asked to add three more when i first compiled the project.
Under 10.00.00.25 it then compiled fine.
Here's another example of a super tiny test program.
Including ustation.dll as reference and adding "using Bentley;" causes a compile error on 10.04.00.46.
Under the 10.00.00.25 virtual machine it compiles fine.
The point after Bentley in the editor only to show that VS found the namespaces inside the Bentley namespace.