Hi Brad,
Thanks for the good words about QAP.
I don't know how DirectFolders was doing and with what language it was developed. We are many
AutoHotkey developers (QAP is built with AHK) who worked on these dialog boxes (with controls named "SysTreeView321" or "SHBrowseForFolder"). At some point it worked but it became unreliable so I decided to stop supporting it in QAP around 2016. Sorry about that.
Jean