I have the program on two computers and never had this issue. A friend purchased the program (installed & reinstalled -- both download & from disk). She gets this error message (unable to find the filter to export that file with) when trying to preview and/or export the website:

Click image for larger version.  Name: problem.jpg  Views: 109  Size: 16.1 KB  ID: 87935

Anyone know what she can do to fix this issue?

Thank you!