No letters of certain fonts using winfonts package

Question

I am trying to use the winfonts package on Windows 8. I installed according to instructions—copied them to texmf-local, edited local config files, update the file names and map files. When I compile this test file under pdflatex,

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage{winfonts}
\begin{document}
\fontfamily{georgia}\selectfont
abcdefg

\fontfamily{arial}\selectfont
abcdefg

\fontfamily{times-ttf}\selectfont
abcdefg

\fontfamily{verdana}\selectfont
abcdefg

\fontfamily{franklingothic}\selectfont
abcdefg

\fontfamily{impact}\selectfont
abcdefg
\end{document}

three of the fonts display correctly (Georgia, Franklin Gothic and Impact) while the other three are displayed only as ▯▯▯▯▯▯. What is the cause of this?

I'm using TeXLive 2012, last updated on 2012-12-26.

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The log file is very long, but there is something interesting

pdfTeX warning: pdflatex.exe (file c:/Windows/fonts/verdana.ttf): glyph `a' not found