I didn't get any hits to clickthrough_log table when I had hard-coded the links in December and wrote a
thread about it back then.
Now I finally had time to test the clickthrough_link and _href procs to create links. The bad news is, that I still don't get any hits to the table. The functions work well and create links looking just right, so the mounting of the ct instance should be fine. Still the clicking of links doesn't get logged.
The code is 4.6 updated last time yesterday.