Mr. Sannerman
You seem like a nice guy maybe I can help you. You said in your reply that you are in 32bit mode. If you want to run Logic in 64 bit mode with with the Tascam it runs great in 64bit mode.
1. Make sure you are running System software 10.6.8
2. Go To Logic in your application folder click on it one time to highlight it do not open it.
3. Go to the File window while Logic is still highlighted
4. Select Get Info from the list
5. Now you will see a little box that will say
6. OPEN IN 32BIT MODE
7. Make sure this box is UNCHECKED
Now you can run Logic in 64bit mode and this will allow you to run all your plugins in 64bit mode which uses less memory. When you do this the Tascam FW1884 will run great with no problems.
DO NOT HOLD DOWN THE 6 & 4 keys while powering up your computer this will put the whole computer in 64bit mode. The Tascam unit will not work if you do that.
Good luck sannerman.
I think Apple is coming out with a whole new version of Logic. I'm sure it will only run with Mountain Lion. If you update to the new Logic with all the new features it will have, our Tascam units will not work with the update. It's time to sell or trade the FW-1884 maybe Fred Flinstone can use it. LOL