package javax.faces.bean missing

[simon5757]

I have been following the Oracle J2EE tutorial using netbeans and glassfish and the sample projects inside the glassfish\javaee-tutorial\examples.

The first few examples worked fine, but today when I opened the guessnumber project I found I was getting "package javax.faces.bean is missing" error messges. This is happening not only to the newly opened project but also to some simple hello world type projects that I had previously opened and run ok.

I can fix this manually by adding the JSF to the project, but I have to do that for every project I open. Something has obviously gone wrong somewhere because this wasn't necessary before and is not included in the tutorial instructions.

Does anyone have any idea what might have happened or how I can fix the problem so I don't need to manually add library references for every project?