The different versions seems to be explained by some Info.plist tags not updated, but the binary files seem to be the latest version. The crashes and lack of starting up automatically are the bigger issue.
➜ /Users cd /
➜ / cd Applications/Navigraph\ Simlink.app
➜ Navigraph Simlink.app grep -r 1.1.19.0104 *
Binary file Contents/MacOS/Navigraph Simlink matches
Binary file Contents/MacOS/lib/libNavigraphNetworkLibrary.1.0.dylib matches
Binary file Contents/MacOS/lib/libNavigraphNetworkLibrary.1.0.0.dylib matches
Binary file Contents/MacOS/lib/libNavigraphNetworkLibrary.dylib matches
Binary file Contents/MacOS/lib/libNavigraphNetworkLibrary.1.dylib matches
Binary file Contents/MacOS/utility/NavigraphSimlinkSettings.app/Contents/MacOS/lib/libNavigraphNetworkLibrary.1.0.dylib matches
Binary file Contents/MacOS/utility/NavigraphSimlinkSettings.app/Contents/MacOS/lib/libNavigraphNetworkLibrary.1.0.0.dylib matches
Binary file Contents/MacOS/utility/NavigraphSimlinkSettings.app/Contents/MacOS/lib/libNavigraphNetworkLibrary.dylib matches
Binary file Contents/MacOS/utility/NavigraphSimlinkSettings.app/Contents/MacOS/lib/libNavigraphNetworkLibrary.1.dylib matches
Binary file Contents/MacOS/utility/NavigraphSimlinkSettings.app/Contents/MacOS/NavigraphSimlinkSettings matches
➜ Navigraph Simlink.app grep -r 1.1.16.0106 *
Contents/MacOS/utility/NavigraphSimlinkSettings.app/Contents/Info.plist: <string>1.1.16.0106</string>
Contents/MacOS/utility/NavigraphSimlinkSettings.app/Contents/Info.plist: <string>1.1.16.0106</string>
Contents/MacOS/utility/NavigraphSimlinkSettings.app/Contents/Info.plist: <string>1.1.16.0106</string>
Contents/Info.plist: <string>1.1.16.0106</string>
Contents/Info.plist: <string>1.1.16.0106</string>
Contents/Info.plist: <string>1.1.16.0106</string>