New lines had been inadvertently written into the .control section.
@ -1404,7 +1404,7 @@ static int setallvsources(struct card *tmpcard, NGHASHPTR instances, char *instn
tfree(tmpcard->line);
tmpcard->line = newline;
card = tmpcard->nextcard;
card = tmpcard;
card = insert_new_line(card, vline, 0, card->linenum_orig, card->linesource);