problem with slime-edit-definition

Hi,

I'm using the latest emacs and slime (git master) and M-. does not work:

"slime-edit-definition-cont: No known definition for: write-table
 (in COMMON-LISP-USER)"

("write-table" is a function in my lisp-file)

What could I do please to solve this problem?

TIA for any help,
-- 
           Peter