You probably need to (re)install Visual Studio for it to work on Windows.
2015-03-30 01:22:58,453 INFO [Thread-6] stencyl.sw.util.StreamGobbler: [openfl.bat] Error: Could not guess MINGW_ROOT (tried [c:/MinGW]) - please set explicitly
(btw. this error is detected in the latest build and will trigger a prompt for installing Visual Studio.)
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Another error in your logs:
2015-03-30 01:49:27,890 ERROR [AWT-EventQueue-0] stencyl.sw.util.Util: Cannot run program "taskkill" (in directory "."): CreateProcess error=2, The system cannot find the file specified
java.io.IOException: Cannot run program "taskkill" (in directory "."): CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessBuilder.start(Unknown Source)
Apparently the taskkill command is not availbale on Win XP home.