XARA Web Designer 9 Premium Problems after updates

My XARA programme just did updates automatically and when I opened a webpage to work on and saved it, then went to preview it, it is bringing up a dialogue box stating: 'Unable to find that filter to import that file with'.
This is rendering the programme unusable for me and I cannot proceed. Can you please advise me urgently how to fix this issue?. HHEELLPP

Thank You
Nicki