Check the change log for details. Users of map-backtrace (outside of slime code) note: The tcr position in the function call is now occupied by the backtrace "context" which is always nil in 0.14.2. If you really need the tcr then you need to call %current-tcr yourself now. Tested in 0.14.1 and 0.14.2. Let me know if you have any trouble with it. -Alan