The debugger version of Flash Player is a tool for development and testing. Like the standard version of Adobe Flash Player 9, it runs SWF files in a browser or on the desktop in a stand-alone player. Unlike Flash Player, the debugger version of Flash Player enables you to do the following:

• Output statements and application errors to the debugger version of the Flash Player local log file by using the trace() method.
• Write data services log messages to the local log file of the debugger version of Flash Player.
• View run-time errors (RTEs).
• Use the fdb command-line debugger.
• Use the Flex Builder debugging tool.
• Use the Flex Builder profiling tool.

The debugger version of Flash Player lets you take advantage of the client-side logging utilities such as the trace() method and the logging API. You are not required to run the debugger version of Flash Player to log compiler and web-tier messages because these logging mechanisms do not require a player.

In nearly all respects, the debugger version of Flash Player appears to be the same as the standard version of Flash Player. To determine whether or not you are running the debugger version of Flash Player, use the instructions in Determining Flash Player version in Flex.

The debugger version of Flash Player comes in ActiveX, Plug-in, and stand-alone versions for Microsoft Internet Explorer, Netscape-based browsers, and desktop applications, respectively. You can find the debugger version of Flash Player installers in the following locations:

• Flex Builder: install_dir/Player/os_version
• Flex SDK: install_dir/runtimes/player/os_version/

Uninstall your current Flash Player before you install the debugger version of Flash Player. For information on installing the debugger version of Flash Player, see the Flex installation instructions.

You can enable or disable trace logging and perform other configuration tasks for the debugger version of Flash Player. For more information, see Configuring the debugger version of Flash Player.