I've PM-ed you link to the official answer... unfortunately, it's a multi-choice process where you do different things depending on exactly what's happenening, so it's not really suitable to cut and paste here... but it's fairly straightforward to follow the instructions.
Not sure about posting the link off-site here - is that allowable or not?
ok I found this:
:shock: gave me a head ache just scanning it let alone reading and understanding it
Best of luck Mal in trying to sort it out.
Once recovered, it's a good idea to make regular back-ups of your Bookmarks too.
Bookmarks>Organise Bookmarks>File>Export
This file should be saved somewhere safe and you can then use the Import function to resurrect them if the problem comes back again.
That was the link I sent, ukwineman :-)
are well great minds think alike then :thumbup:
And he is still puzzling over it!!