-ctn-'s post in DynamicHeapAllocator Crash was marked as the answer
Make sure you delete the original Music/Playlist folder from Soundtrack Editor and replace the folders with those in my mod. Make sure you also download all the dependencies needed for Soundtrack Editor. Where did you download the mod from? Spacedock or Github? Try whichever source you didn't use before and see if a file was corrupted in the download.