Efile Error 70127 - LIne 12700

EFILE
1

efile error message 70127 stating:

  1. There is an entry on line 12700 for a capital loss. Capital losses are only allowable if the taxpayer is deceased.
  2. If this is a subsection 70(1) return for a deceased person…
  3. The amount of taxable capital gains (or net capital losses, if the taxpayer is deceased) is incorrect based on the entries on the Schedule 3, the Form T1170 and/or the Form T2017.

Taxpayer is NOT deceased nor is there a capital loss entered on that line–a capital gain is on that line, reporting from a T3 slip. No entries on the form T1170/T2017.
I have checked all client info, no boxes checked for deceased/rights or things, also tried overriding fields. all have come back with same error message.
Anyone else experiencing this? or anyone know how to get around it?