Have been trying all day to update to the latest version of Stinger (18.104.22.16808), released on 6-13-18, and the download keeps failing. Tried to update using the updater in the PortableApps Platform, and via manual download of the installer. Both indicate that they fail to download.
Platform Updater states, "Download Error: File Not Found (404) on file..."
Standalone updater: "The installer was unable to download Stinger. ... (ERROR: SendRequest Error)