When creating a Sharepoint 2010 project in VB.NET and wanting to deploy an additional referenced assembly you cannot add a new project output assembly to the package.
To replicate the issue:
- Open Sharepoint 2010 project in Visual Studio 2010
- Open "packagepackage.Package"
- Select "Advanced"
- In the Additional Assemblies area select "Add | Add assembly from Project Output..."
This error is then presented:
Cannot add a new project output assembly to the package.
The path is not of a legal form.
Any ideas on what the "path" is that is not "of a legal form"?