Update to 2.2.1 , USB connection is working on my FF Dreamer.
Transfer is slower compared to Flashprint but but acceptable.
With v2.2.0 i was not able to connect by USB , to check I downgraded the firmware to 2.1.20141014
I noticed the new S3D update , installed and USB was working.
At this moment I update to the latest firmware v2.2.20141222
USB is still working visible as , Port : USB Device: 789/1/00000000050C
Baudrate tested : 19200 and 250000 (is not faster in transfer)
At this moment my setting : Automatic USB device detection is disable
Tools/Options/Preferences/ Disable Automatic USB device (un checked)
Because it worked for me i retraced all the steps performed , maybe helpfull for other members