Found an issue with the latest build, though it could be in earlier builds. When using the help browser, clicking on items in the right column results in errors:

wrong # args: should be "::helpbrowser::dir_navigate dir count window x y"
wrong # args: should be "::helpbrowser::dir_navigate dir count window x y"
    while executing
"::helpbrowser::dir_navigate C:/Program Files (x86)/Pd/bin/extra/sigmund~ 2 .helpbrowser.frame.root1 39 10"
    (command bound to event)

Items open normally from the left column.