Visual SourceSafe tried to open a project that could not be found in your Visual SourceSafe database. This error has the following cause and solution:
You moved or renamed the Visual SourceSafe project in Visual SourceSafe Explorer, and then you opened your Visual Basic or Visual C++ project that refers to the old Visual SourceSafe project name.
Click Yes to browse for the project if you know the name of the new project.
Click No if you do not want the project to be under source code control. If you click No, you must manually re-add the project to Visual SourceSafe to use source code control features in the future.