[dba-VB] Compiling Class Library

Hi all

In VS2005 I have a project with a reference to Class Library.

When I have both opened in two sessions of VS and editing both, I've found that I have to run Debug (F5) in the Class Library to have changes reflected at once in the main project.
That's fine, but when I do so, the Class Library pops an error message that - of course - a "Class Library cannot be started directly".

How can I get rid of this error message? Or am I doing this in an unauthorized way?

/gustav