Bug 312888 Problems when entering the linked folder location
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/dialogs/WizardNewFolderMainPage.java
setMessage(resourceGroup.getProblemMessage());
				setErrorMessage(null);
			} else {
				setErrorMessage(resourceGroup.getProblemMessage());
			}
			valid = false;
		}
		if ((useDefaultLocation == null) || useDefaultLocation.getSelection()) {
			IPath containerPath = resourceGroup.getContainerFullPath();
			if (containerPath != null &&
					createContainerHandle(containerPath).isVirtual()) {
				valid = false;
				setErrorMessage(IDEWorkbenchMessages.CreateLinkedResourceGroup_linkRequiredUnderAGroup);
			}
		}
		IStatus linkedResourceStatus = null;
		if (valid) {
			linkedResourceStatus = validateLinkedResource();
			if (linkedResourceStatus.getSeverity() == IStatus.ERROR) {
				valid = false;
			}
		}
		
		if (valid
				&& (linkedResourceStatus == null || linkedResourceStatus.isOK())) {
			setMessage(null);
			setErrorMessage(null);
		}
		
		if (isFilteredByParent()) {