I found a fix for those who are experiencing crashes with the recent FNF updates
(WINDOWS ONLY)
WARNING: Doing this WILL delete your save data
1. Go to your PC's roaming folder
(Press Win + R and type %appdata%)
2. Locate the FunkinCrew folder
3. Backup your data
(Very important if they end up fixing this in a future update)
4. Delete the folder
5. Enjoy your v0.4.x update!