I wanted to use mdframed package but I was getting the error package not found. I followed the advice here to update to Text Live 2011. However, I figured out there is Tex Live 2012 and therefore installed it using the instructions here.
Now, several packages I was using are throwing up error...
stmaryrd.sty,comma.sty,appendix.sty not found! Now, how do I get get rid of these errors and start using mdframed? Any help appreciated.