Monday, October 10, 2005
Got an error message I had never seen before: "Microsoft Office Outlook - Can't open this item. You must enter a positive duration. OK" when attempting to view a calendar item invitation sent by Outlook 2003 in Outlook 2003. When I deleted the mail item from my inbox, another error message appeared: "Microsoft Office Outlook - The item may not have been deleted correctly. If someone sent you the item, that person's copy of the item may not be updated. You must enter a positive duration. OK." After clicking OK, the item is deleted. Searching on "you must enter a positive duration" in Google results in nothing. I think I know the answer to this—will test some more. It has to do with what happens on the last Sunday of every October.