problem with file " pathways" in linux lite

Hi Guys,

I'm hoping someone can help me with this ? I have an acer one which operates linux lite. Newbie to Linux and been really happy with it so far...But this morning something went wrong with the file storage. :( The icons under 'files' from the desk top don't work. If I click on 'my files' this seems to work, but shows no files apart from a pictures folder, which is empty. All my documents (including my pictures) seem to have gone.

I know that some of my files are still there becasue they can be accessed by opening in a programme, like the presentations program, but not all of them can be accessed in this way. Also, if I click on 'disk' here to get a fuller picture of what is there, it shows nothing but the empty pictures folder and I can't get back to the list.

Any ideas on what might have caused this ? and how to fix it ??

Any advice very much appreciated !

Sarah