cant open libreoffice 5.1 files

I can’t open any Libreoffice 5.1 files (saved as odt documents), the icon on the desktop looks blank (as in it is white). I have tried downloading Libreoffice again - no change. I am also unable to open Libreoffice at all - even though I can see the documents on my documents page on my PC. This is urgent as I am a professional journalist and need to recover this work immediately.

You probably didn’t save with an extension. Make sure that Automatic file extension on the save dialog box is ticked.

If LibreOffice doesn’t open at all, the user profile may have become corrupted. Reset your user profile.
Click here for help how to do that.