Bug 312888 Problems when entering the linked folder location
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/dialogs/WizardNewFolderMainPage.java
setMessage(IDEWorkbenchMessages.WizardNewFolderCreationPage_resourceWillBeFilteredWarning, IMessageProvider.ERROR);
			setupLinkedResourceTarget();
			valid = false;
		}
		
		return valid;
	}
	
	private boolean isFilteredByParent() {
		boolean createVirtualFolder = useVirtualFolder != null && useVirtualFolder.getSelection();
		if (createVirtualFolder)
			return false;
		if ((linkedResourceGroup == null) || linkedResourceGroup.isEnabled())
			return false;
		IPath containerPath = resourceGroup.getContainerFullPath();
		if (containerPath == null)
			return false;
		String resourceName = resourceGroup.getResource();
		if (resourceName == null)
			return false;
		if (resourceName.length() > 0) {
			IPath newFolderPath = containerPath.append(resourceName);
			IFolder newFolderHandle = createFolderHandle(newFolderPath);
			IWorkspace workspace = newFolderHandle.getWorkspace();
			return !workspace.validateFiltered(newFolderHandle).isOK();
		}
		return false;
	}
}