Updating modules in Windows fails

Updating module mysql to version 1.393.
Fixes problem : When trying to login as a user without access to the 'mysql' database, the login can be reported by Webmin as invalid even though the username and password are actually correct
Downloading mysql-1.390-3.wbm.gz ..
Downloading http://download.webmin.com/updates/mysql-1.390-3.wbm.gz (231648 bytes) ..
Received 1024 bytes (0 %)
Received 23552 bytes (10 %)
Received 47104 bytes (20 %)
Received 69632 bytes (30 %)
Received 93184 bytes (40 %)
Received 116736 bytes (50 %)
Received 139264 bytes (60 %)
Received 162816 bytes (70 %)
Received 185344 bytes (80 %)
Received 208896 bytes (90 %)
Received 231648 bytes (100 %)
.. download complete.
Failed to install module : Failed to gunzip file : c:/webmintemp/mysql-1.390-3.wbm.gz: No such file or directory