As I always like to install the excellent TrueType test styles package 
when building a new image, I noticed that on both my Mac OS X machine 
and my Windows machine that a debugger appears at the end of the 
installation of this package (v5 of the package into a 3.6 beta image). 
  As best as I can determine, it's not a problem with the package 
itself, however.

The installation ends with an invocation of TTCFont class>>initialize, 
which seems to attempt to build a TrueType version of the default style 
(ComicSans MS).  However, in my image, the style that the code finds in 
TextConstants (for ComicSans MS) contains a font array with many fonts, 
but none of the fonts have a set pixel size!  In fact, all of them have 
nil as their pixel size, quite surprisingly.  That is strange, because 
invoking TTFont class>>default yields a basic style for Comic Sans MS 
with a number of pixel / point sizes.  Further, I don't think much 
about the TrueTypeTextStyles package has changed for a while, so it 
would appear that something about the standard constants has changed.

??