Hey JSchuch,
Would you happen to also have the information on the Media Player file you are using? We are currently going through the process of overhauling the Media Player Framework as there are known issues with its compatibility across various platforms.
In the blueprint images you have provided, I also do not see where you have added or initialized the Media Player file to load and play. To be clear, you have imported a Media Player asset into the Content Browser to be used in your project, correct?
If you can reproduce this issue in a blank project using simple steps and minimal assets, then I can get the crash to appear on my end as well and get a bug entered.
Thank you,