19.1.58 apparent bug
happens in 19.1.56 and .58 but not 19.0
In a Winreport2, which had a slightly odd index use, as in
break on key 1 key 3
worked in 19.0 but printed the subtotal after every line in 19.1
created a new index that used the keys properly and got the error above
goes away when output_pagecheck is removed
I should be on a beach ...