D:\OpenServer\domains\pp>drush dl module_filter
Unable to decompress D:\OpenServer\userdata\tmp\drush_tmp_1409751143_54071867b26f9\modC52D.tmp.gz.                                                                   [error]

copy(D:\OpenServer\userdata\tmp/drush_tmp_1409751143_54071867b26f9/module_filter): failed to open stream: No such file or directory filesystem.inc:262             [warning]

Project module_filter (7.x-2.0-alpha2) could not be downloaded to D:/OpenServer/domains/pp/sites/all/modules/module_filter.                                         [error]

D:\OpenServer\domains\pp>drush dl module_filter
Project module_filter (7.x-2.0-alpha2) downloaded to D:/OpenServer/domains/pp/sites/all/modules/module_filter.                                                    [success]

D:\OpenServer\domains\pp>