Thanks for that!
I have managed to crash Build 2298 (but in an - admittedly - unusual way
)...
I created an expermental tab session with only C: on the left and D: on the right pane and saved it as "Root Tabs". It showed correctly in slot #2.
I then switched back to Session #1 with Ctrl+I, Ctrl+1, but - by accident - hit Ctrl+I, Ctrl+2 (ie., the new session hotkey for the newly-created session in slot #2). A crash report was created & sent to you & (of course) MC exited "ungracefully".
I realise that this sequence of events will not normally happen, but users do the strangest things
And that is what Beta testing is all about.
Please take a look at the report & let me know if you need more info.