Greetings all,
I have a Yaesu FT-90r, and for several months receive the following error when I try to use CHIRP to program the rig.  I keep updating CHIRP, but still get the same error.  Does anyone have an idea why?  I'd really like to use the software on this rig.  My interface is Prolific USB cable plugging into the mic jack. I always verify which COM port the Prolific interface is using before attempting a download from the rig.

Failed to communicate with radio: Traceback (most recent call last):
  File "chirp\drivers\ft90.pyo", line 332, in sync_in
  File "chirp\drivers\ft90.pyo", line 276, in _clone_in
  File "chirp\drivers\ft90.pyo", line 260, in _read
Exception: Unable to read blocknum 00 expected blocksize 4 got 0.

Thanks in advance for any help,
73's
Mike WE3U