RUNSWITHSIZZERS  I own both AudioHijack Pro(AHP) and Fission, and they are good products, as far as they go.

However, I now find myself shopping for a THIRD audio editing software application because I want to be able to apply filters and effects to my recordings after they are complete - but I don't want to take the time to re-record them in real time as required by AHP.

The sad part is, whatever audio editor I buy will no doubt duplicate the recording and editing functionality I have already purchased from Rogue Amoeba (though perhaps not as elegantly).

I am still testing WireTap Studio and several others, but no matter which one I buy, when you add it's price to the $50 I have already spent with Rogue Amoeba, it's easy to see I would have been better off to pay a little more up front to get the features I want.  
(Version 1.0.4)

RUNSWITHSIZZERS  I too had had trouble getting my Logitech device (MX700 cordless optical mouse) to recognized by LCC 2.1.2 under Mac OS 10.4.8 on a 2001 Quicksilver. I eventually got the mouse to be recognized, but then had several crashes of the Device manager while trying to configure it.

This worked for me:

Using the LCC 2.1.2 installer, uninstall v2.1.2

Restart

Install version 2.1.1 (http://www.logitech.com/pub/techsupport/mouse/mac/lcc211.dmg)

Restart

If you have more than one User, don't use fast switching, but shut down and log on as the second user before trying to configure the second user.  
(Version 2.1.2)