wp-cli shell not working

Hi,i have installed the wp-cli for WordPress, everything works fine except the $wp shell command.I’m getting the same error:“The system cannot find the path specified” .I have tried all what is possible,tried to use –path=”/cygdrive/e/cygwin64/home/Administrator/bin” (also E:\cygwin64\home\Administrator\bin) without succes. Tried cygpath -m (-a),the same error.

$ php wp-cli.phar shell –debug
Debug: No readable global config found (0.018s)

Debug: No project config found (0.019s)
Debug: ABSPATH defined: E:\cygwin64\home\Administrator\bin/ (0.036s)
Debug: Begin WordPress load (0.037s)
Debug: wp-config.php path: E:\cygwin64\home\Administrator\bin\wp-config.php (0.037s)
Debug: Loaded WordPress (0.341s)
Debug: Running command: shell (0.342s)
**The system cannot find the path specified**

$ php wp-cli.phar cli info
PHP binary:     D:\xampp\php\php.exe
PHP version:    5.6.15
php.ini used:   D:\xampp\php\php.ini
WP-CLI root dir:        phar://wp-cli.phar
WP-CLI global config:
WP-CLI project config:
WP-CLI version: 0.22.0-alpha-d3df499