Code:
sencha -sdk ../ext-4.1.1a compile -classpath=js page -yui -in index.php -out build/index.php
This does not work. I get the error

Code:
[ERR]           No such property : 'yui'
I see that the yui compresser is there under the lib directory. But the sencha command line does not have this option. I am trying this on Windows 7