The error message that pops up is "The font 'GaramondNo8-Reg' contains a bad /BBox." Sometimes I get instead that "The font 'GaramondNo8-Ita' contains a bad /BBox."
The .log file file doesn't seem to have any anomalies until the end, which is as follows.
Here is how much of TeX's memory you used:
1656 strings out of 95408
20039 string characters out of 1187142
51153 words of memory out of 1054853
4748 multiletter control sequences out of 60000
41574 words of font info for 54 fonts, out of 1000000 for 2000
14 hyphenation exceptions out of 8191
29i,4n,29p,234b,113s stack positions out of 5000i,500n,10000p,200000b,32768s
PDF statistics:
28 PDF objects out of 300000
0 named destinations out of 300000
1 words of extra memory for PDF output out of 10000
<C:/Program Files/MiKTeX 2.5/fonts/type1/bluesky/eul
er/eufm10.pfb><C:/Program Files/MiKTeX 2.5/fonts/type1/mathdesign/mdugm/md-gmri
7m.pfb>{cm-super-t1.enc}<C:/Program Files/MiKTeX 2.5/fonts/type1/public/cm-supe
r/sfss1000.pfb><C:/Program Files/MiKTeX 2.5/fonts/type1/public/cm-super/sftt100
0.pfb>{texnansi.enc}
Warning: (file ugmr8a.pfb): cannot open Type 1 font file for reading
Warning: (file ugmm8a.pfb): cannot open Type 1 font file for reading
Warning: (file ugmri8a.pfb): cannot open Type 1 font file for reading
Warning: (file ugmr8a.pfb): cannot open Type 1 font file for reading
Output written on test.pdf (1 page, 45638 bytes).
The input is as follows.
\documentclass[10pt]{article}
\usepackage[mdugm]{mathdesign}
\begin{document}
This is some text, nice \textit{Garamond} text.
Oh texty, \textbf{texty} \textsl{text}, how I love thee.
\texttt{Please compile properly} \textsf{for once}.\\
\vspace{1cm}
\(\alpha\beta\gamma\delta \quad
abcdefg \quad
\mathfrak{abcdefg} \quad
\deg f\)
\end{document}
Thanks for any help.