Unable to load map file after using custom beat snap

[novApostropheA]

Describe the bug

After using a custom beat snap of 1/5th, new notes would no longer appear on the timeline but would show in the map preview on the right. I exited from the editor, saving my changes under the impression that going back in would display the notes on the timeline and I'd be able to remove them then, but now I receive an "Unable to read map file" error when attempting to open the editor again. Right-clicking the map in the Single Player menu and clicking Edit leads to an infinite black screen.

To Reproduce

1. Open the editor
2. Create a new song
3. Set BPM
4. Apply a custom beat snap (any works, tested with 1/5th and 1/7th)
5. Place a note
6. Saving from here will cause the map to be unable to be loaded

Expected behavior

Notes should be visible on the timeline and snapped to custom beat snap

Log Files

runtime.log

Screenshots

No response