Z-Wave Stick Not Seen after moving to different Mac.

My iMac went on the fritz so I pressed into service an old iMac I had for my Indigo server. I copied over the files from a TimeMachine backup and mover over the Z-Wave Controller (version 2 I believe) to the old iMac. All went well to a point. All my devices seem to show up, my triggers are all there but the Z-Wave controller is not being seen. Tried restart, different ports and a USB Hub ( which I was using on the iMac that is now dead) I looked at the log and it showed the "serial port open error:[Errno 16] could not open port. And make sure FTDI driver is installed. Kind of stuck now, any help would be great, thanks in advance.
Ted

Update- I had to install the Silicon Labs VCP Driver Kit ( as per the Get Started Guide, when all is lost RTFM.)

[matt (support)]

Yes, it is a bit confusing based on the USB chip the interfaces use but here is the breakdown:

CM15: Indigo Installed Driver
PowerLinc 2414U: Indigo Installed Driver
PowerLinc 2413U / 2412U, RFXtrx/rec433: FTDI Driver (we recommend the official FTDI driver, not Apple's buggy FTDI driver)
Z-Stick (Series 2), GoControl QuickStick Combo : Silicon Labs VCP Driver
Z-Stick (Gen 5), HomeSeer SmartStick+: Apple's Built-in USB Modem Driver.

[MODERATOR NOTE] updated to include other interfaces.

Matt,

I have had a zStick Gen2 and Insteon 2413UH running in parallel for months with no problem. About 3 weeks ago the insteon interface went offline.

I have a the following
Powerlinc V2 USB 2414U (disconnected - replaced by the 2413UH which I think is newer)

Powerlinc USB Dual Band 2413UH connected on usbserial -A700ahRM
Stick Gen2 Local (physical) connected on usbmodem1D11

When I have the zstick connected the insteon device goes off line after a day or so.
I have to disable the stick disable the insteon Powerlinc and then re-enable the insteon powerlinc for it to come back online.

Any idea why this would happen ?
What is this FTDI driver ? Do I need it ? Where do i Get it ?

Thanks

Philip

[matt (support)]

You can get the FTDI driver here., which is what the PowerLinc 2413U uses. I don't know how/why that would have a conflict with the Z-Stick Series 2 though, since that uses a totally different chip and driver.

Matt,

Thank you
should I use the VCP or the D2XX ?

Philip

[matt (support)]

VCP