我复制了一个演示文稿，其中一切正常，但现在在这个新的演示文稿中，幻灯片上没有显示任何项目符号！
梅威瑟：
\documentclass[xcolor=dvipsnames,hyperref={breaklinks=true},mathserif,professionalfont,12pt]{beamer}
\usecolortheme[named=RoyalBlue]{structure}
\useoutertheme{infolines}
\usetheme[height=7mm]{Rochester}
\setbeamertemplate{items}[ball]
\setbeamertemplate{blocks}[rounded][shadow=true]
\setbeamertemplate{navigation symbols}{}
%\usefonttheme{serif}
\usefonttheme{professionalfonts}
\usepackage{amsmath,amssymb,amsthm,amssymb}
\usepackage{mathtools}
\usepackage{bbm}
\usepackage{graphicx}
\usepackage{float}
\usepackage[croatian]{babel}
\usepackage{ucs}
\usepackage[utf8x]{inputenc}
\usepackage{txfonts}
\usepackage{subfigure}
\usepackage{color}
\usepackage{xcolor}
\usepackage{listings}
\usepackage{time}
\usepackage{extarrows}
\title{Random title}
\subtitle{Random subtitle}
\author{Random Randofsky}
\institute{Random institute, Random City 1000, Randomia}
\date{\today}
\begin{document}
\maketitle
\section{Random section1}
\begin{frame}
\frametitle{About}
\begin{itemize}
\item Random stuff Random stuff
\item \itshape{more random stuff}
\item Random stuff...
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{Reference}
\begin{thebibliography}{99}
\end{thebibliography}
\end{frame}
\begin{frame}
\begin{center}
Thank you for listening\\
The End
\end{center}
\end{frame}
\end{document}
问题似乎出在哪里？我没有更改序言中的任何内容。
答案1
编辑：基于汇编的问题。丁戈使用dvipdfm。通过更改为pdflatex一切都运行良好。
我对你举的例子没有异议。
您的标头中的一些包已过时。请查看此帖子： 如何跟上软件包并知道哪些已经过时了？
不需要color和xcolor一起加载（beamer包中会默认加载）。
也许你的版本有问题。这是我的文件列表：
*File List*
beamer.cls 2011/09/12 development version 3.12 A class for typesetting pre
sentations (rcs-revision 70f9d8411e54)
beamerbasercs.sty 2011/09/21 (rcs-revision 42a2c9debdc3)
beamerbasemodes.sty 2010/05/01 (rcs-revision efa082c6111d)
beamerbasedecode.sty 2010/05/01 (rcs-revision efa082c6111d)
ifpdf.sty 2011/01/30 v2.3 Provides the ifpdf switch (HO)
beamerbaseoptions.sty 2010/04/27 (rcs-revision 982469101dd6)
keyval.sty 1999/03/16 v1.13 key=value parser (DPC)
geometry.sty 2010/09/12 v5.6 Page Geometry
ifvtex.sty 2010/03/01 v1.5 Switches for detecting VTeX and its modes (HO)
ifxetex.sty 2010/09/12 v0.6 Provides ifxetex conditional
size12.clo 2007/10/19 v1.4h Standard LaTeX file (size option)
pgfcore.sty 2010/04/11 v2.10 (rcs-revision 1.7)
graphicx.sty 1999/02/16 v1.0f Enhanced LaTeX Graphics (DPC,SPQR)
graphics.sty 2009/02/05 v1.0o Standard LaTeX Graphics (DPC,SPQR)
trig.sty 1999/03/16 v1.09 sin cos tan (DPC)
graphics.cfg 2010/04/23 v1.9 graphics configuration of TeX Live
pdftex.def 2011/05/27 v0.06d Graphics/color for pdfTeX
infwarerr.sty 2010/04/08 v1.3 Providing info/warning/message (HO)
ltxcmds.sty 2011/04/18 v1.20 LaTeX kernel commands for general use (HO)
pgfsys.sty 2010/06/30 v2.10 (rcs-revision 1.37)
pgfrcs.sty 2010/10/25 v2.10 (rcs-revision 1.24)
everyshi.sty 2001/05/15 v3.00 EveryShipout Package (MS)
pgfrcs.code.tex
pgfsys.code.tex
pgfsyssoftpath.code.tex 2008/07/18 (rcs-revision 1.7)
pgfsysprotocol.code.tex 2006/10/16 (rcs-revision 1.4)
xcolor.sty 2007/01/21 v2.11 LaTeX color extensions (UK)
color.cfg 2007/01/18 v1.5 color configuration of teTeX/TeXLive
dvipsnam.def 1999/02/16 v3.0i Driver-dependant file (DPC,SPQR)
pgfcore.code.tex
xxcolor.sty 2003/10/24 ver 0.1
hyperref.sty 2011/10/01 v6.82j Hypertext links for LaTeX
hobsub-hyperref.sty 2011/04/23 v1.4 Bundle oberdiek, subset hyperref (HO)
hobsub-generic.sty 2011/04/23 v1.4 Bundle oberdiek, subset generic (HO)
hobsub.sty 2011/04/23 v1.4 Subsetting bundle oberdiek (HO)
ifluatex.sty 2010/03/01 v1.3 Provides the ifluatex switch (HO)
intcalc.sty 2007/09/27 v1.1 Expandable integer calculations (HO)
etexcmds.sty 2011/02/16 v1.5 Prefix for e-TeX command names (HO)
kvsetkeys.sty 2011/04/07 v1.13 Key value parser (HO)
kvdefinekeys.sty 2011/04/07 v1.3 Defining keys (HO)
pdftexcmds.sty 2011/04/22 v0.16 Utilities of pdfTeX for LuaTeX (HO)
pdfescape.sty 2011/04/04 v1.12 Provides string conversions (HO)
bigintcalc.sty 2011/01/30 v1.2 Expandable big integer calculations (HO)
bitset.sty 2011/01/30 v1.1 Data type bit set (HO)
uniquecounter.sty 2011/01/30 v1.2 Provides unlimited unique counter (HO)
letltxmacro.sty 2010/09/02 v1.4 Let assignment for LaTeX macros (HO)
hopatch.sty 2011/01/30 v1.0 Wrapper for package hooks (HO)
xcolor-patch.sty 2011/01/30 xcolor patch
atveryend.sty 2011/04/23 v1.7 Hooks at very end of document (HO)
atbegshi.sty 2011/01/30 v1.15 At begin shipout hook (HO)
refcount.sty 2010/12/01 v3.2 Data extraction from references (HO)
hycolor.sty 2011/01/30 v1.7 Color options of hyperref/bookmark (HO)
kvoptions.sty 2010/12/23 v3.10 Keyval support for LaTeX options (HO)
pd1enc.def 2011/10/01 v6.82j Hyperref: PDFDocEncoding definition (HO)
hyperref.cfg 2002/06/06 v1.2 hyperref configuration of TeXLive
url.sty 2006/04/12 ver 3.3 Verb mode for urls, etc.
hpdftex.def 2011/10/01 v6.82j Hyperref driver for pdfTeX
rerunfilecheck.sty 2011/04/15 v1.7 Rerun checks for auxiliary files (HO)
beamerbaserequires.sty 2010/05/01 (rcs-revision efa082c6111d)
beamerbasecompatibility.sty 2010/07/12 (rcs-revision 6648c3177e4e)
beamerbasefont.sty 2010/10/26 (rcs-revision f39336aafb3c)
amssymb.sty 2009/06/22 v3.00
amsfonts.sty 2009/06/22 v3.00 Basic AMSFonts support
beamerbasetranslator.sty 2010/06/11 (rcs-revision 85fd1cc7fc42)
translator.sty 2010/06/12 ver 1.10
translator-language-mappings.tex
beamerbasemisc.sty 2010/06/06 (rcs-revision bff0a9294b45)
beamerbasetwoscreens.sty 2010/05/01 (rcs-revision efa082c6111d)
beamerbaseoverlay.sty 2011/09/12 (rcs-revision 70f9d8411e54)
beamerbasetitle.sty 2010/09/21 (rcs-revision f0446ed0b6ae)
beamerbasesection.sty 2010/08/29 (rcs-revision e07e85b4cd4a)
beamerbaseframe.sty 2011/09/12 (rcs-revision 70f9d8411e54)
beamerbaseverbatim.sty 2011/09/12 (rcs-revision 70f9d8411e54)
beamerbaseframesize.sty 2011/09/12 (rcs-revision 70f9d8411e54)
beamerbaseframecomponents.sty 2011/09/12 (rcs-revision 70f9d8411e54)
beamerbasecolor.sty 2010/06/06 (rcs-revision d1a9b48be06d)
beamerbasenotes.sty 2010/05/01 (rcs-revision efa082c6111d)
beamerbasetoc.sty 2010/06/11 (rcs-revision 242ecaa6783b)
beamerbasetemplates.sty 2010/05/01 (rcs-revision efa082c6111d)
beamerbaseauxtemplates.sty 2010/05/01 (rcs-revision efa082c6111d)
beamerbaseboxes.sty 2010/05/01 (rcs-revision efa082c6111d)
beamerbaselocalstructure.sty 2010/09/19 (rcs-revision 9224c5f3ce70)
enumerate.sty 1999/03/05 v3.00 enumerate extensions (DPC)
beamerbasenavigation.sty 2010/05/01 (rcs-revision efa082c6111d)
beamerbasetheorems.sty 2010/06/06 (rcs-revision 7e7cc5e53e9d)
amsmath.sty 2000/07/18 v2.13 AMS math features
amstext.sty 2000/06/29 v2.01
amsgen.sty 1999/11/30 v2.0
amsbsy.sty 1999/11/29 v1.2d
amsopn.sty 1999/12/14 v2.01 operator names
amsthm.sty 2009/07/02 v2.20.1
beamerbasethemes.sty 2010/05/01 (rcs-revision efa082c6111d)
beamerthemedefault.sty 2010/06/17 (rcs-revision d02a7cf4d8ae)
beamerfontthemedefault.sty 2010/06/17 (rcs-revision d02a7cf4d8ae)
beamercolorthemedefault.sty 2010/06/17 (rcs-revision d02a7cf4d8ae)
beamerinnerthemedefault.sty 2010/06/17 (rcs-revision d02a7cf4d8ae)
beamerouterthemedefault.sty 2010/06/17 (rcs-revision d02a7cf4d8ae)
beamercolorthemestructure.sty 2010/06/17 (rcs-revision d02a7cf4d8ae)
beamerouterthemeinfolines.sty 2010/07/10 (rcs-revision 445340293dde)
beamerthemeRochester.sty 2010/06/17 (rcs-revision d02a7cf4d8ae)
beamerouterthemesidebar.sty 2010/06/17 (rcs-revision d02a7cf4d8ae)
beamerinnerthemerectangles.sty 2010/06/17 (rcs-revision d02a7cf4d8ae)
beamercolorthemewhale.sty 2010/06/17 (rcs-revision d02a7cf4d8ae)
beamercolorthemeorchid.sty 2010/06/17 (rcs-revision d02a7cf4d8ae)
beamerfontthemeprofessionalfonts.sty 2010/06/17 (rcs-revision d02a7cf4d8ae)
mathtools.sty 2011/04/06 v1.11 mathematical typesetting tools
calc.sty 2007/08/22 v4.3 Infix arithmetic (KKT,FJ)
mhsetup.sty 2010/01/21 v1.2a programming setup (MH)
bbm.sty 1999/03/15 V 1.2 provides fonts for set symbols - TH
float.sty 2001/11/08 v1.3d Float enhancements (AL)
babel.sty 2008/07/08 v3.8m The Babel package
croatian.ldf 2005/03/29 v1.3l Croatian support from the babel system
ucs.sty 2004/10/17 UCS: Unicode input support
uni-global.def 2004/10/17 UCS: Unicode global data
inputenc.sty 2008/03/30 v1.1d Input encoding file
utf8x.def 2004/10/17 UCS: Input encoding UTF-8
txfonts.sty 2008/01/22 v3.2.1
subfigure.sty 2002/03/15 v2.1.5 subfigure package
subfigure.cfg
listings.sty 2007/02/22 1.4 (Carsten Heinz)
lstmisc.sty 2007/02/22 1.4 (Carsten Heinz)
listings.cfg 2007/02/22 1.4 listings configuration
time.sty
extarrows.sty 2008/05/15 v1.0b Some extensible arrows
omltxmi.fd 2000/12/15 v3.1
omstxsy.fd 2000/12/15 v3.1
omxtxex.fd 2000/12/15 v3.1
utxexa.fd 2000/12/15 v3.1
ot1txss.fd 2000/12/15 v3.1
supp-pdf.mkii
epstopdf-base.sty 2010/02/09 v2.5 Base part for package epstopdf
grfext.sty 2010/08/19 v1.1 Managing graphics extensions (HO)
epstopdf-sys.cfg 2010/07/13 v1.3 Configuration of (r)epstopdf for TeX Live
nameref.sty 2010/04/30 v2.40 Cross-referencing by name of section
gettitlestring.sty 2010/12/03 v1.4 Cleanup title references (HO)
test.out
test.out
translator-basic-dictionary-English.dict
translator-bibliography-dictionary-English.dict
translator-environment-dictionary-English.dict
translator-months-dictionary-English.dict
translator-numbers-dictionary-English.dict
translator-theorem-dictionary-English.dict
ucsencs.def 2003/11/29 Fixes to fontencodings LGR, T3
***********
答案2
我在使用 XeLaTex 时也遇到了类似的问题，结果发现原因是与枚举项包裹。