This just started yesterday When I click to open Xara1 I get the following message: "This version of Xara is currently not tegistered for XAR files. Do you want to register it?" I click the Yes button and then get the following message: Error from XaraX (at the top of the error box)Message: Invalid file name

Cause
You have entered an incorrect name for a file. Often this is because the file name contains characters that are not permitted in file names.

What Can I Do?
Reenter the filename without the offending character.

What does that mean? Any help will be appreciated.