If you have a Tascam US-2400 connected to your computer, it will be detected incorrectly when Logic initially scans for control surfaces. The Tascam US-2400 should be detected as if it were a Logic/Mackie Control and two Logic/Mackie Control XTs. Instead the unit is detected as if it were a Logic/Mackie Control and two Mackie C4s. Additionally, the fader banks are in the wrong order. As a result, the control surface will not operate properly with Logic.
To resolve this issue, delete the control surfaces that Logic has automatically scanned and manually rescan the US-2400 by doing the following: