I launch Explorer from the SuperBar (which I hate) and no matter what I do Explorer doesn't retain the column widths in the Right Hand pane I always have to drag the bar to the right to see all the columns I want.
Thanks very much but that doesn't work either. I have only lust realised that it's the preview pane that's causing the problem.
If I turn the Preview pane off all is well. But with the pPreview Pane On, it always reverts to the Preview Pane occupying most of the RHS panel.