Debugging Flex applications log output to file with mm.cfg and flashlog.txt
记录log trace信息必须用flash debug version，首先创建 “mm.cfg”文件在如下目录：
- Windows;
C:\Documents and Settings\username\mm.cfg - OSX;
/Library/Application Support/Macromedia/mm.cfg - Linux;
home/username/mm.cfg
ErrorReportingEnable=1
TraceOutputFileEnable=1
现在debug applications，flashlog.txt将自动被创建在如下目录：
- Windows;
C:\Documents and Settings\username\Application Data\Macromedia\Flash Player\Logs\flashlog.txt - OSX;
/Users/username/Library/Preferences/Macromedia/Flash Player/Logs/flashlog.txt - Linux;
home/username/Macromedia/Flash_Player/Logs/flashlog.txt
