Hi alexo
For every loaded extension, there is a directory entry with that extensions name in:
/usr/local/tce.installed/
That directory entry will be one of two things, either a link to a script in the extension, or an empty file created by tce-load.
In neither case should you see "No such file or directory". Does this produce an output:
ls -L /usr/local/tce.installed/ | grep -i pav