[slime-devel] Jump to source code

I think that jumping to source code from error message of compiler and interpretetor is very important feature. I use slime with 'sbcl' and created the file 'test.l" with code: (+ 1 2) (+ 3 "4") The last line has an error Next I do (in emacs) M-x slime CL-USER>(load "test.l") Course emacs teels me abou error. Then via debugging frame and commands 'M-n', 'M-p' or 'v' I can position to source code for the all frames. But no way to point at the 'test.l' file. Why? Or how i can from eror message jump to position of this error in a source code? BTW. I checked also 'lisp' and 'clisp' - same result!