Edirol USB Audio/MIDI Interface UA-20 User Manual

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81
Troubleshooting
Macintosh users
1.
Disconnect the USB cable (by which the UA-20 is connected) from your 
Macintosh.
2.
From the 
system extensions
 folder, drag 
“USB UA-20 Driver”
 into the trash 
to delete it. 
3.
Delete 
UA-20
 from the 
OMS Folder
 inside the System folder, or drag 
UA-20 
Driver
 from the 
FreeMIDI Folder
 to the trash.
4.
into the trash to delete it. 
5.
Restart the Macintosh.