Bug 53201 NPE when re-running newly generated javadoc.xml
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javadocexport/JavadocOptionsManager.java
fWizardStatus.setWarning(JavadocExportMessages.getString("JavadocOptionsManager.antfileincorrectIOE.warning")); 
			} catch (SAXException e) {
				fWizardStatus.setWarning(JavadocExportMessages.getString("JavadocOptionsManager.antfileincorrectSAXE.warning")); 
			}
		}
		if (javadocSection != null) {
			loadFromDialogStore(javadocSection, currSelection);
		} else {
			loadDefaults(currSelection);
		}
	}
	/*
	 * Returns the the Java project that is parent top all selected elements or null if
	 * the elements are from several projects.
	 */
	private IJavaProject getSingleProjectFromInitialSelection() {
		IJavaProject res= null;
		for (int i= 0; i < fInitialElements.length; i++) {
			IJavaProject curr= fInitialElements[i].getJavaProject();
			if (res == null) {
				res= curr;
			} else if (!res.equals(curr)) {
				return null;
			}
		}
		return res;
	}
	
	
	private void loadFromDialogStore(IDialogSettings settings, List sel) {