If your scoring application reports the error "expectation 417 error", it is probably to do with how your router or proxy server is routing information.  In order to fix this error, follow these steps:

1) Open the scoreboard application
2) Click "Configuration Settings" on the main menu
3) Click "Open this folder" in the "General Settings" tab under "New Fixture Saved Files Folder" next to "Application Directory"
4) Using Notepad, open the file "SpawtzScorer.exe.config"
5) At the end of the file, between "</system.web>" and "</configuration>", add the following lines:

        <servicePointManager expect100Continue="false" />

6) Save the file and close it
7) Close the scoreboard application and restart it.

The error should no longer persist.