If you have installed ASEBA-Network and are changing the password on the first log in, and the page refreshes when you click "change", first check if there is a WebDAV module in your IIS configuration. If you do see the WebDAV module on your site, you will need to remove it.
You will need to remove WebDAV module through the server manager. Open the server manager, click "add roles and features" and then choose "remove roles and features wizard
For instructions on how to remove WebDAV module, please see more here: http://www.exactsoftware.com/docs/DocView.aspx?DocumentID=%7bc288fa96-2eea-414f-843f-29a2a1531405%7d