files don't export as html. UPDATE.

[Peter Kiessling]

Update;
I continued using my work around. Then tonight, suddenly again, the .html extension began to reappear. I did snoop around a bit and surmise that the only thing lacking in the report file was the extension label, which is necessary for the browser to see it. Text edit showed a file that seemed to have html code even though it was not labelled html or anything.  
Anyhow now working.