I discovered a way to crash things. If you open a project that has one chapter and then hit both control keys to change chapter, you get a blue screen with this text:
Error
engine/projects.lua:91: attempt to concatenate local 'file' (a nil value)
Traceback
[love "callbacks.lua"]:228: in function 'handler'
engine/projects.lua:91: in function 'loadFile'
engine/projects.lua:65: in function 'getFileSummary'
engine/states/fileSelect.lua:65: in function 'draw'
engine/states.lua:56: in function 'draw'
engine/init.lua:54: in function 'draw'
main.lua:42: in function 'draw'
[love "callbacks.lua"]:168: in function <[love "callbacks.lua"]:144>
[C]: in function 'xpcall'