XM Driver Install Problem
I have been trying to install the FTDIUSBSerialDriver for the XM Radio but it is apparently not installing properly. Each time I install the driver and reboot, I get an error message saying:"System extensions cannot be used: The system extension "/System/Library/Extension/FTDIUSBSerialDriver.kext" 9s installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update". I have re-installed the driver several times with a "driver successfully installed" message after each installation. After looking at the forum at MacXM, I tried the Disk Utility/Repair Disk Permission, after which I would reboot and be greeted by the original "System Extension cannot be used" error message. When trying to run the MacXM application it says it can't find the radio, which tells me the driver is not working properly.
Can anybody shed any light on this?