From the Logitech support pages:
The following keyboards are fully supported under Mac OSX using the latest version of the Logitech Control Center.
Logitech Cordless MX Duo
Logitech Elite Duo
Logitech Access Duo Optical
Logitech Cordless Navigator Duo
Logitech Cordless Access Keyboard
Elite Keyboard
Logitech Cordless Access Duo
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If your keyboard is not listed above, it will still function. However, some of the features may not work.
Of course, your keyboard/mouse is not shown as supported with OS X, so there's not much reason to expect that Logitech's software for the Mac should work.
How about this new version of Control Center just released a few days ago.