Thanks for that.

It didn't actually cure the problem (randomly no highlight appears on any button on returning to the menu), but the DVD is still usable so I am not too worried, though it would be nice to sort it.

For info, following our discussions a while ago, I have now reduced the difficulties which I was having with simple menus to a minimum by making sure that all colours are set to the same in Edit Color Schemes, thereby removing the need to worry about the layout of the picture mask level.

I think that I am now able to do all that I need with PaintShopPro, DvdReMakePro, Ultramux and ImgBurn.