SeeMusic doesn't recognize my midi

Let me say this in advance. I tried loading it into a different piano visualizer (embers) and the midi worked fine there. I also tried opening it in an audio software after editing it in my DAW (Reaper). In all of these situations, it worked without any issues. I'm currently trying to create a video of me playing Pathetique 2nd mvt, and after editing the video and midi it was finally time to use SeeMusic to mix it together. However when I try and import the midi into the software, it doesn't show any of the keys, and it only plays 3 seconds before it stops completely. I tried loading a different Midi of a different video I played earlier (Rach prelude in g major), and it worked fine, but this one doesnt work at all. I've tried this in SeeMusic 5.2.4 and 5.2.3 and it didn't work in either of them.

I've attached a video of me trying to load both midi's in SeeMusic - the first one doesn't work (pathetique 2) and the second one does (rach prelude g major) I'm really confused and, open to whatever suggestions you guys have. Kind regards, Andreas