Hard crash when CCX completes or "Field of length [#] missing at column [#] of line [...]" message.

Victor

This is a bug which happens if you press the solve button twice in quick succession. Clicking it twice slowly is OK, but there's a small time window after the first click where a 2nd click will trigger the crash later on when CCX exits.

Sorry for frustrations and lost time that this has caused. It will be fixed in version 13.