Hi Tom,
thanks for the feedback! Seems to be something weird, I test every build on the XP.
What build did you download? (you can find out in the build.number file).
Let's check the exact command line prepared and executed in the rase.bat. To do that, open the rase.bat and replace the line starting with the start command with this one:
echo "" %JAVA% %JVM_ARGS% %ADDITIONAL_JVM_ARGS% -classpath %CLASSPATH% %MAIN_CLASS% %* > "%~dp0command.log"
Run the rase.bat and check the command.log file created, it's supposed to contain the command line. Please send it back to me.