Hash verification while downloading failed" errors when try to update the qt SDK.

Steps:
1. Launch Qt SDK updater from Terminal use:./QtSDK/SDKMaintenanceTool -style cleanbooks --setTempRepository http://ftp.qt.nokia.com/sdk/linux/x32/online_qtsdk_repo/.
2. After updater launched, firstly update the QtSDKMaintenanceTool. When the progress is done restart this tool by click "Restart" button.
3. Select all the component shows in the update list. and start to update.
4. When updating, there will be some error pops up.

Expected Result:
There should be no error occurs when updating.
Actually Result:
Error occurs.

Please note that when click "Retry" button on the error box. The progress may still be continue.

Please see the attached picture.