When updating the player, delete both scenario and scenario_dmm folders, then place the newer scenario and scenario_dmm folders obtained from the most recent update.
You might have corrupted download. I recommend using JDownloader (https://board.jdownloader.org/showthread.php?t=54725) to download the files. The said tool has file checksum tool to compare both downloaded file and cloud file's hash and then reconstruct the file in case of corruption.