Visual Studio 2005 - Form Designer problem, project from source safe from other machines

The other day, I tried opening a project from source safe that was originally created on another computer. After opening the project, I tried to open the Form designer for one of the forms, and I got an error message...... There is no editor available for C:\..\Form1.vb Make sure the application for the file type (.vb) is installed The fix was the build the project at least once. This allowed me to then open up the form.