I've reduced the linsolve issue to this example: linsolve([x=2,y=3],[x]) Maxima encountered a Lisp error: Error during processing of --eval option "(cl-user::run)": The value 2 is not of type LIST. Automatically continuing. To reenable the Lisp debugger set *debugger-hook* to nil. linsolve([x=2,y=3],[x,y]) works. This is Maxima 5.11.0, SBCL 1.0.1. Kostas