I had the same issue. Called Applecare and got it fixed. Below are the instructions.
Removing Motorola Device Manager from Mac OSX 10.8.5 Mountain Lion
To see the problem application:
Go to Activity Monitor
To get to Activity Monitor - Type in Activity Monitor in Spotlight (top right magnifying glass)
In Activity Monitor you will see MotoHelper Daemon running. I couldn't force it to Quit Process.
Rebooted in Safe mode by holding down shift key after chime
Go to Library (Hold Option Key while selecting Go from top menu to see Library)
In Library (which is root level)
Delete all files/folders in the Launch Agents folder (do not delete the Launch Agents folder)
Delete all files/folders in the Launch Daemons folder if it exists (do not delete the Launch Daemons folder)
Delete all files/folders in the Startup Items folder (do not delete the Startup Items folder)
Delete all files/folders in the Cache folder (do not delete the Cache folder)
Do the same at Hardware Level which is "Computer" under the Go Menu (this seemed to be where the Launch Daemon for MotoHelper was located.
Do the same at User level which is "Home" under the Go Menu if a Library folder shows up under your Home menu which is also the name of your computer
Empty the trash. When it shows popup that cannot delete Cache items because in use, click "continue" through all of those popups.
Reboot and check activity monitor. You should not get the popup or show MotoHelper running.
Empty Trash again to delete the remnant files that didn't previously delete.
Botta boom botta bing!