Since today’s update the festival launchers don’t always recognise the fact that they’ve been loaded with snowballs - the snowballs appear on the fitting-screen icon but not on the associated ‘loading indicator’, and shooting those snowballs doesn’t register in ‘Capsuleers hit’.
As for the issue, maybe try clearing your cache files in Esc menu and also verify integrity of downloaded files and purge extra files in the Launcher’s shared cache.