pgAdmin III / Debugger does not work

<p style="margin: 0px;">Hi,<p style="margin: 0px;"> <p style="margin: 0px;">after installing postgSQL 9.1.2 including
pgAdminIII 1.14 on Windows XP i tried to activate the debugger.<p style="margin: 0px;"> <p style="margin: 0px;">I
followedthe instructions<p style="margin: 0px;"> <p style="margin: 0px;">1. Edit the postgresql.conf file in the data
directoryand modify the shared_preload_libraries config option to look like the following, <br /><br />Windows:<p
style="margin:0px;"> <p style="margin: 0px;">shared_preload_libraries = '$libdir/plugins/plugin_debugger.dll' <br /><br
/>2.Restart the PostgreSQL server. <br /><br />3. Run <Installation directory>/share/contrib/pldbgapi.sql on
Windowsin the database you wish to debug using psql or the pgAdmin query tool.<p style="margin: 0px;"> <p
style="margin:0px;">Every Step worked and is verified, but the debugger in pgAdmin remains disabled.<p style="margin:
0px;"> <pstyle="margin: 0px;">Restarting the server, it says that the plugin_debugger.dll is loaded. The generated
functions(pldbapi.sql) are displayed and available in the database, but however pgAdmin seems not to recognize the
debuggerplugin. <p style="margin: 0px;"> <p style="margin: 0px;">What can I do? I need the debugger to debug functions
andfor a postgreSQL presentation that takes place at Friday.<p style="margin: 0px;"> <p style="margin: 0px;">Thanks in
advance.<pstyle="margin: 0px;"> <p style="margin: 0px;">Best regards<p style="margin: 0px;">Ulrike<p style="margin:
0px;"> <pstyle="margin: 0px;"><br /><br />