@BraTS2026Participants Hi to all participants, and in particular those of Task 4! First of all, thank you to everyone who has already submitted a docker and a paper, we are very excited to see such great interest and can't wait to hopefully see you all at MICCAI in autumn! We wanted to share an announcement with you regarding Nifti file saving. In the past it has happened that some algorithms were written in a way that they would check if any of the test cases had already been processed and then skip these. This can sometimes lead to issues on our side. If any intermediate files or loggings etc. are created, the code might skip processing certain cases and/or not save the final nifti predictions. **So, as a note for the future: Please make sure that your model always processes all cases, regardless of whether the docker is being run for the first time, or re-run. This means, you should enforce the model, which you are submitting to us, to always start afresh from the very beginning, every time the docker is run anew. ** We are aware that this information comes very late, so as I mentioned it is more meant as an important remark for the future, in case you like our challenge and would like to participate again next year! :) If, however, you know that the model you're submitting this year uses such a logic, then please reach out to me. **This way, we can make sure that whenever we start a new run, we delete all (intermediate) files/loggings/artifacts.... that were potentially created to ensure the model starts again from scratch and does not resume at some point. ** Thank you all in advance and good luck to those of you who are busy with the very last steps of completing your submission! Best Paula BraTS Organization Team 2026