I now intend to write any technical problem I face in this blog. The reason is to remind me later if I face the same problem then I have a quick solution. It happened before when I successfully did some life-hacking thingy but for whatever reason I have not make a good note. Then, when the same problem appears I got frustrated. Not because I cannot solve it, but because I feel guilty not to take a good note for that problem.
Alright, today problem is error
!pdfTeX error: pdflatex (file rtxr): Font rtxr at 600 not found
that I got when compiling a pdflatex file using MiKTeX 2.9.