Well... oddly enough, I had just the same file appear when I was trying to back up my address books earlier. I couldn't seem to extract the address book from Outlook, so I imported it to Outlook Express, then saved the OE .wab file. I've also got the same address book in Mozilla Mail, which saved much more easily.
Anyway, this ~ appeared, but when I deleted it, it hasn't come back. Can you not use Outlook instead, Sandra? It might save some annoyance until they fix it.