As @andrew13 mentioned in one of my previous bug reports, it could be due to this:
“I verified it by checking the actual source of the song. The bug may be that in BB1 mode, it is still adding the Autopilot data at the end of the file. In the attached file, I stripped out the Autopilot information and set the song file version back to BB1 but left everything else in tact.”
Thank you, Andrew. I included the song as a part of the bug report so that the Singular Sound developers could examine what’s going on. All songs I export from v2.0.7b cannot be opened and played in the BBM.
Can you share what you are doing to render the song playable in the BBM? That way users that download one-press songs crafted in the BBMO can use them in the BBM? Same question for a folder of songs exported from the BBMO—can anything be done to the folder or does it have to be worked on a song-by-song basis that are in the folder?
Final question, is your process simpler than exporting the MIDI of the BBMO song and reassembling it in the BBM?
