Serial port problem

Hi
I am having problems finding the serial port I need.I have a Arduino Duemilenove.My computer is a Mac desktop.
The computer only shows the 4 bluetooth serial ports. It used to work perfectly.

It used to work perfectly.

All I changed was?

Is the power LED on?
Have you tried a different USB lead?
Try reinstalling the USB drivers
Do you have another board you can try?

The power led is on.
How do I install the USB Drivers?
I tried another board and cord, and that didn't fix it.

tanner331:
The power led is on.
How do I install the USB Drivers?
I tried another board and cord, and that didn't fix it.

Read this:

in detail....

Let us know what you see...

I saw that you need the FTDIUSBSerialDriver_10_4_10_5_10_6.mpkg but where on the FTDI Website do you find that one?Is it under VCP or D2XX Drivers?Or is under something else?
Thanks

I have had Macs seem to "disable" certain USB devices after certain types of errors are detected. try rebooting the mac (perhaps even power cycling it) and see if the FTDI shows up again...