Eclipse Outline View is empty

Question

A simple one today. My Outline view in eclipse does not show me any methods or fields anymore. I have selected the few options that are available in the outline vie

Answer 1

Tranz's response worked fine for me, even though the path to the file is slightly different (I am using Eclipse Luna):

.metadata/.plugins/org.eclipse.core.runtime/.settings/org.eclipse.jdt.ui.prefs

After deleting those lines and restarting Eclipse, the Outline works fine again.