SPS-66 not recognized / drivers fail to install Win 10 Dell

Moving to a new computer and upgrading to Sonar Platinum.  I am trying to install the device and drivers for the venerable Sonar Power Studio SPS-66, but the installation fails at the point where it asks for the device to be plugged in.  Here are the specifics.

• Computer: Dell XPS 8700, 12GB memory
• Processor: Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz
• OS: Windows 10 Home
• Driver downloads: Win 8/8.1 version, downloaded from the Cakewalk site. (Also tried Vista, just for grins)

 
This computer does not have a built-in IEEE 1394 port, so I have installed a SIIG PCI-e card (model ASG3620X).  SPS-66 power light comes on when set to draw power from the bus, so I am assuming the 1394 cable is OK.
 
Symptoms:

• It appears that the device is not being recognized by the OS, because nothing shows up in the Device Manager when plugged in.
• after a manual driver install (see below) the device shows as present in the Device Manager with the yellow warning icon and the message "The device cannot start (Code 10)"

Here's what I have tried (uninstall and reboot after each attempt):

• standard installation using both bus power and adapter power -- hangs waiting for device to be plugged in.
• cancel installation when it asks for the device to be plugged in, and manual installation of driver using Device Manager.  (I tried both Win 8/8.1 and Vista drivers.)  SPS-66 shows up in the device list, but "cannot start (Code 10)"

Any help will be appreciated!  Really don't want to spend $$$ for a new interface if it can be helped.  Thanks in advance!
 
EDIT: I also tried the FA-66 drivers from Roland, still no luck.  Also, all OS/versions are 64-bit.