Python: Unable to Render Tex in Matplotlib

I recently upgraded my laptop to Snow Leopard, updated TeX to Version 3.1415926 (TeX Live 2011/MacPorts 2011_5), and installed Python 2.7.3. After all these installs, I ran macport selfupdate and macport upgrade outdated. However, now when I try to use TeX in matplotlib, I receive the following: <!-- language: none --> LaTeX was not able to process the following string:'lp' Here is the full report generated by LaTeX: This is pdfTeX, Version 3.1415926-2.3-1.40.12 (TeX Live 2011/MacPorts 2011_5) restricted \write18 enabled. entering extended mode (./64a53cc27244d5ee10969789771e33fa.tex LaTeX2e <2009/09/24> Babel <v3.8l> and hyphenation patterns for english, dumylang, nohyphenation, cz ech, slovak, dutch, ukenglish, usenglishmax, basque, french, german-x-2009-06-1 9, ngerman-x-2009-06-19, german, ngerman, swissgerman, italian, polish, portugu ese, spanish, catalan, galician, ukenglish, loaded. (/opt/local/share/texmf-texlive-dist/tex/latex/base/article.cls Document Class: article 2007/10/19 v1.4h Standard LaTeX document class (/opt/local/share/texmf-texlive-dist/tex/latex/base/size10.clo)) ! LaTeX Error: File `type1cm.sty' not found. Type X to quit or <RETURN> to proceed, or enter new name. (Default extension: sty) l.3 \renewcommand {\rmdefault}{pnc}^^M No pages of output. Similar to [this previous question](https://stackoverflow.com/questions/6082126/tex-in-matplotlib-on-mac-os-x-and-tex-live), I tried setting the path in my python code via: os.environ['PATH'] = os.environ['PATH'] + ':/opt/local/bin/latex' since `which latex` yielded `/opt/local/bin/latex`. However, that didn't work, with the same error message. I also tried the path to tex, as well as the example from the previous question. No change. I then tried to force possibly missing packages via: matplotlib.rcParams['text.latex.preamble']=[r"\usepackage{amsmath}"] however, that also did not work. The only way I can get my plots to work is to say `rc('text', usetex=False)`, which is not ideal. Any help would be much appreciated.