Outlook 2003 Calendar Printing - "The messaging interface has returned an unknown error"

Problem: When you try to print another user's shared calendar in Microsoft Office Outlook 2003, the calendar does not print. Additionally, you receive the following error message:

"The messaging interface has returned an unknown error. If the problem persists, restart Outlook."

Solution:

Disable the TaskPad option
1. On the File menu, click Print.
2. Click Page Setup.
3. On the Format tab, click to clear the TaskPad check box.
4. Click OK to close the Page Setup dialog box.
5. With the Daily Style print style selected, click OK to print the shared calendar.

and u are good to go!!