I got it to work after several long, wasted days of messing with it. I was ready to roll back to XP but that would have been weeks of work.
This is from memory, but it should be close.
install driver. it fails.
reinstallations fail on a 'can't find file' error.
plug USB-ML12 into computer.
open device manager, under Jungo you will see one entry for the multilink (there are supposed to be 2)
in c:\pemicro\drivers edit the windrvr6.inf file find the line below and put a ; at the beginning
windrvr6.sys,,,0x22 ; COPYFLG_NOSKIP | COPYFLG_NO_VERSION_DIALOG
now looks like:
;windrvr6.sys,,,0x22 ; COPYFLG_NOSKIP | COPYFLG_NO_VERSION_DIALOG
save the file.
in the device manager, right click the top node (the name of your computer) and select "install legacy hardware"
click search for hardware, let the computer search and give up. Then select browse for driver, navigate to C:\pemicro\drivers\windrvr6.inf
click ok, the computer will complain that its not a digitally signed driver, click install anyway
the installation will complete and in the Jungo section of device manager there will be 2 entries.
The USB_ML12 will now work