XARA EXTREME PRO 4.0.4966 CD VERSION

Hi all.

I've just started a new website design.

Saved the design OK as a XAR file, but when I try to export it as a "Website (HTML)(*.htm;*.html)" I get the following error dialog:

Invalid file name. A name cannot contain any of the following characters:
* :? # > < | " '

After cutting out the entire design to the clipboard and trying again, this time exporting a blank page, I still get the same error!

Have tried stopping and re-starting Xara to no effect.

Anyone got any ideas?