<p>Sorry, I was reading/writing my responses as emails rather than posting here on GitHub. Same thing, better formatting:</p>

<p>Go into <code>psql</code>, probably as the <code>postgres</code> user, and issue</p>

<pre><code>select proname, probin from pg_proc where proname like 'map%'
</code></pre>

<p>and make sure you see the path to your installation, not the <code>osm.compton</code> one, in my case it's:</p>

<pre><code>osm_development=# select proname, probin from pg_proc where proname like 'map%';
-[ RECORD 1]------------------------------------------------------------------------------
proname | maptile_for_point
probin  | /Users/erictheise/Projects/erictheise/openstreetmap-website/db/functions/libpgosm
</code></pre>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br>Reply to this email directly or <a href='https://github.com/openstreetmap/openstreetmap-website/issues/685#issuecomment-33072579'>view it on GitHub</a>.<img src='https://github.com/notifications/beacon/1419053__eyJzY29wZSI6Ik5ld3NpZXM6QmVhY29uIiwiZXhwaXJlcyI6MTcwNTk2MDMwNCwiZGF0YSI6eyJpZCI6MjQwNjAyNTF9fQ==--ffd1a01408a5551df3d6b9c149440bb2943f69fe.gif' height='1' width='1'></p>