This looks like a problem between Crossover (generally) and cinnamon 1.5.2 (being the most recent cinnamon version on Fedora 17).
Today I tested by installing Cinnamon on my previously "just GNOME3" Fedora 17 machine. I found that any new installs of Windows Apps (MS Office or not) gave me the behavior described, using Crossover 11.2.1 - the applications section of the Cinnamon menu just stops working! In downgrading back to 11.2.0, 11.1.0, and 11.0.3, fresh installs each time (and fresh installs of a random windows app in each), I see the same behavior. When switching over to a GNOME 3 session, everything's fine.
I found that if I de-activate the menu items in manage bottles for my Windows Apps, this restores cinnamon's menu. You can do this by opening manage bottles from terminal:
$ /opt/cxoffice/bin/cxsetup
and then going to Control Panel>Edit Menus to turn off the menu items. You may need to logout/login, but Cinnamon should start working again. You can then launch your Windows Apps manually via the "run command" tool in Crossover (Crossover's primary menus still work), and use "create launcher" to create launcher items from the .exe files, as described here:
https://www.codeweavers.com/support/wiki/linux/linuxtutorial/create_launcher
In my (admittedly cursory) testing, the newly created icon works.
I've created a bug for our developers to investigate further.