Problems running dot: exit code=-1, command='dot'

As I used Doxygen to generate source code docuemt, I failed to generate graphs and got this kind of error message: 

Problems running dot: exit code=-1, command='dot', arguments='"classcom_1_1htc_1_1hr_1_1tree_1_1_department_table_bean_50f82c9386b01669779a1524b380b355_cgraph.dot" -Tpng -o "classcom_1_1htc_1_1hr_1_1tree_1_1_department_table_bean_50f82c9386b01669779a1524b380b355_cgraph.png"'

I spent lots of time to resolve this odd issue, and found out its result from the wrong GraphViz version. I cannot use the latest version. As I tried graphviz-2.12.exe this version, all problems were gone. You can go to here to download this verion: http://www.graphviz.org/pub/graphviz/stable/windows/

Here is class hierarchy:


Here is call graph:

HTC Development Environment Configuration

http://www.slideshare.net/junyuo/htc-development-environment-configuration-presentation

Monitoring Development Statistics with StatSVN

Monitoring Development Statistics with StatSVN from Guo Albert

Preemptive Error Detection with FindBugs

Preemptive Error Detection with FindBugs from Guo Albert

Subclipse - the Subversion plugin for Eclipse

1. What is Subclipse ?
2. Subclipse Installation
3. Import Source Code From SubVersion
4. Troubleshooting

http://junyuo.googlepages.com/Subclipse-TheSubversionPluginForEcli.rar

An Introduction to Subversion

http://albertguo.myweb.hinet.net/data/Subversion.rar

[SVN] mod_dav_svn.so is garbled- perhaps this is not an Apache module DSO

Error Message
httpd: Syntax error on line 115 of D:/Program Files/Apache Software Foundation/Apache2.2/conf/httpd.conf: API module structure `dav_svn_module' in file D:/Program Files/Apache Software Foundation/Apache2.2/modules/mod_dav_svn.so is garbled- perhaps this is not an Apache module DSO?


Resolution
Owning to the apache version is 2.2, it will report this kind of error message. Just change the apache version to 2.0, then this kind of error will disappear.