FYI

Just upgraded to check out Patrick Rein's Terse Guide addition.

Squeak5.0
latest update: #15987

After upgrade, opening the Help kicked in that "CR to enter an emergency evaluator" window.

The DNU exception was thrown in

SimpleHierarchicalListMorph >> drawLinesOn: aCanvas

.....
                ifTrue:
                    [submorph drawLinesOn: clippedCanvas lineColor: lColor]]]

submorph in this case was an instance of  IndentingListItemMorph where


In that class I added the missing method  that invokes an existing and similar method with a default value of 1.

drawLinesOn: aCanvas lineColor: lineColor
    self drawLinesOn: aCanvas lineColor: lineColor indentThreshold: 1.

Help browser now opens with no errors.

tty