In very rare scenarios it could happen that you get this error when starting a sport in Live Score:
Error when starting Application. Unable to cast object of type xy...
When you start Live Score in a specific sport, it will automatically reload all previous settings and layouts of that sport.
Somehow it happened, that a layout from a different sport is existing in there.
The solution is easy - we just need to delete that previously cached setting.
For this, open the Log/Cache directory from the Startup Screen with the Sport selection in Live Score.
Then backup and delete the "cache_XYZ" file of your sport.
This will remove all settings and caches of that sport.
If you now restart Live Score and select your sport, it should work again!