FT-817 cannot tune VFO with gpredict

[mdblack98]

When tuning the VFO the FT-817 disconnects.
C:\Qt_Projects\hamlib-w32-4.0\bin>rigctl -m1020 -rCOM11 -s38400 --set-conf=post_write_delay=50 -vvvvv
rigctl Hamlib 4.0~git
Last commit was Fri Jul 10 04:37:22 2020 +0000 SHA=9c8561
Report bugs to hamlib-developer@lists.sourceforge.net

rig_init called
yaesu: initrigs4_yaesu called
rig_register called
rig_register: rig_register (1021)
rig_register called
rig_register: rig_register (1027)
rig_register called
rig_register: rig_register (1010)
rig_register called
rig_register: rig_register (1005)
rig_register called
rig_register: rig_register (1006)
rig_register called
rig_register: rig_register (1007)
rig_register called
rig_register: rig_register (1039)
rig_register called
rig_register: rig_register (1009)
rig_register called
rig_register: rig_register (1020)
rig_register called
rig_register: rig_register (1001)
rig_register called
rig_register: rig_register (1022)
rig_register called
rig_register: rig_register (1023)
rig_register called
rig_register: rig_register (1011)
rig_register called
rig_register: rig_register (1015)
rig_register called
rig_register: rig_register (1013)
rig_register called
rig_register: rig_register (1014)
rig_register called
rig_register: rig_register (1028)
rig_register called
rig_register: rig_register (1031)
rig_register called
rig_register: rig_register (1016)
rig_register called
rig_register: rig_register (1003)
rig_register called
rig_register: rig_register (1024)
rig_register called
rig_register: rig_register (1004)
rig_register called
rig_register: rig_register (1025)
rig_register called
rig_register: rig_register (1029)
rig_register called
rig_register: rig_register (1037)
rig_register called
rig_register: rig_register (1032)
rig_register called
rig_register: rig_register (1030)
rig_register called
rig_register: rig_register (1017)
rig_register called
rig_register: rig_register (1019)
rig_register called
rig_register: rig_register (1018)
rig_register called
rig_register: rig_register (1026)
rig_register called
rig_register: rig_register (1033)
rig_register called
rig_register: rig_register (1034)
rig_register called
rig_register: rig_register (1035)
rig_register called
rig_register: rig_register (1036)
rig_register called
rig_register: rig_register (1038)
rig_register called
rig_register: rig_register (1040)
rig_register called
rig_register: rig_register (1041)
ft817_init: called
rig_token_lookup called
rig_confparam_lookup called
rig_set_conf called
rig_confparam_lookup called
rig_set_conf: post_write_delay='50'
rig_open called
port_open called
serial_open called
serial_setup called
serial_setup: tcgetattr
serial_setup: cfsetispeed
serial_setup: cfsetospeed
serial_setup: tcsetattr TCSANOW
serial_flush called
serial_flush: tcflush
ft817_open: called
rig_get_vfo called
rig_get_vfo: no get_vfo
vfo_fixup: vfo=VFOA
vfo_fixup: final vfo=VFOA
rig_open: No set_vfo function rig so default vfo = VFOA
Opened rig model 1020, 'FT-817'
Backend version: 20200629.0, Status: Stable
rigctl_parse: called, interactive=1

Rig command: f
rigctl_parse: cmd=f(66)
rigctl_parse: cmd==0x66
rigctl_parse: vfo_opt=0
rigctl_parse: debug1
rigctl_parse: debug5
rigctl_parse: debug10
rigctl_parse: vfo_opt=0
rig_get_freq called vfo=currVFO
vfo_fixup: vfo=currVFO
vfo_fixup: Leaving currVFO alone
elapsed_ms: start = 0,0
rig_get_freq: cache check age=1000000ms
rig_get_freq: cache miss age=1000000ms, cached_vfo=None, asked_vfo=currVFO
vfo_fixup: vfo=VFOA
vfo_fixup: final vfo=VFOA
rig_get_freq: no set_vfo so vfo=VFOA
ft817_get_freq: called
ft817_get_freq: retries=5
ft817_get_status: called
rig_flush: called for serial device
serial_flush called
serial_flush: tcflush
write_block called
write_block(): TX 5 bytes
0000 00 00 00 00 03 .....
read_block called
read_block(): RX 5 bytes
0000 05 01 81 59 01 ...Y.
ft817_read_eeprom: called
write_block called
write_block(): TX 5 bytes
0000 00 64 00 00 bb .d...
read_block called
read_block(): RX 2 bytes
0000 85 40 .@
from_bcd_be called
0000 05 01 81 59 01 ...Y.
ft817_get_freq: retries=4
ft817_get_status: called
rig_flush: called for serial device
serial_flush called
serial_flush: tcflush
write_block called
write_block(): TX 5 bytes
0000 00 00 00 00 03 .....
read_block called
read_block(): RX 5 bytes
0000 05 01 82 01 01 .....
ft817_read_eeprom: called
write_block called
write_block(): TX 5 bytes
0000 00 64 00 00 bb .d...
read_block called
read_block(): RX 2 bytes
0000 85 40 .@
from_bcd_be called
0000 05 01 82 01 01 .....
ft817_get_freq: retries=3
ft817_get_status: called
rig_flush: called for serial device
serial_flush called
serial_flush: tcflush
write_block called
write_block(): TX 5 bytes
0000 00 00 00 00 03 .....
read_block called
read_block(): RX 5 bytes
0000 05 01 82 46 01 ...F.
ft817_read_eeprom: called
write_block called
write_block(): TX 5 bytes
0000 00 64 00 00 bb .d...
read_block called
read_block(): RX 2 bytes
0000 85 40 .@
from_bcd_be called
0000 05 01 82 46 01 ...F.
ft817_get_freq: retries=2
ft817_get_status: called
rig_flush: called for serial device
serial_flush called
serial_flush: tcflush
write_block called
write_block(): TX 5 bytes
0000 00 00 00 00 03 .....
read_block called
read_block(): RX 5 bytes
0000 05 01 82 85 01 .....
ft817_read_eeprom: called
write_block called
write_block(): TX 5 bytes
0000 00 64 00 00 bb .d...
read_block called
read_block(): RX 2 bytes
0000 85 40 .@
from_bcd_be called
0000 05 01 82 85 01 .....
ft817_get_freq: retries=1
ft817_get_status: called
rig_flush: called for serial device
serial_flush called
serial_flush: tcflush
write_block called
write_block(): TX 5 bytes
0000 00 00 00 00 03 .....
read_block called
read_block(): RX 5 bytes
0000 05 01 83 30 01 ...0.
ft817_read_eeprom: called
write_block called
write_block(): TX 5 bytes
0000 00 64 00 00 bb .d...
read_block called
read_block(): RX 2 bytes
0000 85 40 .@
from_bcd_be called
0000 05 01 83 30 01 ...0.
ft817_get_freq: retries=0
ft817_get_status: called
rig_flush: called for serial device
serial_flush called
serial_flush: tcflush
write_block called
write_block(): TX 5 bytes
0000 00 00 00 00 03 .....
read_block called
read_block(): RX 5 bytes
0000 05 01 83 67 01 ...g.
ft817_read_eeprom: called
write_block called
write_block(): TX 5 bytes
0000 00 64 00 00 bb .d...
read_block called
read_block(): RX 2 bytes
0000 85 40 .@
from_bcd_be called
0000 05 01 83 67 01 ...g.
elapsed_ms: start = 0,0
elapsed_ms: after gettime, start = 1594406759,501626300
rig_get_freq: cache reset age=999000ms, vfo=VFOA, freq=0
rigctl_parse: vfo_opt=0
get_freq: error = IO error
rigctl_parse: retcode=-6
rigctl_parse: called, interactive=1

Rig command: rigctl_parse: cmd==0x0a