[Tex/LaTex] Latex not finding ‘mhchem.sty’

texlive

I just installed a new copy of latex 2015 from the latex site, i.e., not from the Ubuntu distro, and configured tlmgr. I'm getting an error that 'mhchem.sty' is not found however file is located in:

/usr/local/texlive/2015/texmf-dist/tex/latex/mhchem/mhchem.sty

What have I done wrong?
Thanks.

Best Answer

You should update the database of the installed packages with the command texhash in a terminal.