apm_log is a part of my "log spew reduction campaign" described here:
https://openacs.org/bboard/q-and-a-fetch-msg.tcl?msg_id=0005ko&topic_id=OpenACS%204%2e0%20Design&topic=12this proc is defined at the bottom of /packages/acs-tcl/tcl/apm-procs.tcl Try this: restart your server and see if there are errors loading the this file.