Jquery-ui build error

Jquery-ui build error


Hi,
I checked out the current jQuery-ui version using "svn co
http://jquery-ui.googlecode.com/svn/trunk".
I am using ant for the build purpose, but the build fails in the
middle throwing up the following error message.
BUILD FAILED
/root/jquery/ui/trunk/build/build.xml:58: The following error occurred
while executing this line:
/root/jquery/ui/trunk/build/build.xml:62: File /root/jquery/ui/trunk/
build/dist/jquery.ui-1.7pre/headers/${target}.js does not exist.
Please let me know if something is going wrong from my end.
Regards
Supratik