If you are attempting to create a view and you have dragged across some fields into the field categories in Step 2 of the View Builder. When you attempt to Save the view you could see is the following error:
No fields have been added to this view.
Key question, are you using IE?
This problem is most likely caused by Internet Explorer's Compatibility Mode being turned ON. If so, turn this off and try again to save the View. This time it should work!
If you are not sure about what IE's Compatibility mode is, there are many places in the internet to find out about it, one of them is this page from MS themselves.