Jan 23, 2013 11:42 AM in response to henryfromgreen cove springs
Had the same problem. Here's the process I went through to getting it working again:
Tried fresh batteries. Clicks worked, but no mouse tracking.
Another set of fresh batteries. The same result.
Tried removing and re-adding the mouse in the Bluetooth Preferences. No difference.
Found a blog post that suggested cleaning the battery contacts. Mine looked nice and shiny, but I scrubbed them anyway. Still no good.
Went into Bluetooth preferences, highlighted the mouse then under the gear menu, clicked "Update Services" then "Monitor Connection RSSI". Monitor Connection RSSI opened a new window with a graph. It took a few seconds for it to start plotting data, but as soon as it did, the mouse began working correctly.
Feb 1, 2013 12:14 AM in response to henryfromgreen cove springs
Delete the extension named USBOverdrive.kext in the extensions folder under \System\Library\Extensions. Restart the computer and it work.