Hi David!
Start Cqrlog
At "Database connection" window select your log but do not open it.
Instead press "Utils" and select "Configuration/Export"
Give a filename for ex: /tmp/myconf, press "Save button

Open file /tmp/myconf.cfg with plain text editor like nano, vi, leafpad etc.
Search "[frmNewQSO_dbgrdQSOBefore]"
Check all values. They are columns (in order) and their widths. They should be clear text with no special characters etc.

Like:
[frmNewQSO_dbgrdQSOBefore]
qsodate=79
time_on=67
callsign=53
mode=244
freq=60
loc=60
rst_s=60
rst_r=60
name=0
qth=0
remarks=60
lotw_qsls=0
eqsl_qsl_sent=0
qslr=55
qsl_s=60
dxcc_ref=0
state=0
lotw_qslr=60
eqsl_qsl_rcvd=60
srx=60
stx=60
srx_string=60
stx_string=60
contestname=60
my_loc=60[frmNewQSO_dbgrdQSOBefore]
qsodate=79
time_on=67
callsign=53
mode=244
freq=60
loc=60
rst_s=60
rst_r=60
name=0
qth=0
remarks=60
lotw_qsls=0
eqsl_qsl_sent=0
qslr=55
qsl_s=60
dxcc_ref=0
state=0
lotw_qslr=60
eqsl_qsl_rcvd=60
srx=60
stx=60
srx_string=60
stx_string=60
contestname=60
my_loc=60

When fixed, save file and return to "Database connection" window.
There press utils button and select "Configuration import"
Find your edited file and load it.
After that press button "open" and look the NewQSO, change order of columns, close and reopen to see if change was saved.