I suggest you copy the file to a new directory
then click twice on the file name and backspace out the whole filename and call it fluke.html
and then try it.
I know of no reason why you cant change the filename.
I am running short of ideas.
goto the folder where your file is sitting
one click only on the filename
at the top of the window
click on file/rename
then type in ftse.html
then click anywhere in the folder where there is a blank area.
Oh no !
it will work, but you will have to refresh it manually as it stands at the mo.
You need to go back to the earlier pages where I gave the code for autorefresh and put that code in at the top of your file.