This occurs infrequently because Dazzle's xml files are not always 'Well formed' i.e. they don't always follow the rules for exporting an xml format file. To fix it you can do the following:
1. Right click on the file and choose "Open With..."
2. Select ?Notepad? if it is on the list or pick "Choose Program.." And select it from the list if it is not.
3. Once in notepad choose "Save As..."
4. Enter a filename and for "Encoding" select "UTF-8"
5. Try importing the file again