[libreoffice-users] ERROR The requested operation requires elevation. Help please?

Hi all.
Every time I try and open a document from my Hard Drive to Libre Office I get the following Error 
window.
ERROR  The requested operation requires elevation.
This has been happening for the last week or so. It coincided with Libre Office asking to make 
changes to my computer whenever I tried to start the program and it won't start unless I say 'YES'.
Any document that is in the 'recent documents' option in the program itself will open, but nothing 
else.
I have deleted and re-installed Libre Office and still no difference.
Can anyone help and let me know how to fix this issue? I have many extremely important business 
documents I can no longer access.
Thanks in advance for any assistance.
Greg.
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