I upgraded to WSPR 2.1 and now I get this message in DOS window:

Error attempting to set rig frequency.
rigctl -m 124 -r COM3 -s 4800 -C data_bits=8 -C stop_bits=2 -C serial_handshake=
None -C dtr_state=OFF F 14095600

The band does not change. Rig is FT-1000MP.

I can revert back to ver 2 and CAT works OK.

Is anyone else having this problem?

73's,

John - K5XL