Maintain Qt SDK Installation Error

Hello, Techyv,
Has anyone encountered the following error in this particular installation?
If you have and fixed it can you please kindly tell me how you did it?
Thanks so much for any help.

Maintain Qt SDK
Updater Package manager
Updating component configuration of Qt SDK
Installing component Qt 4.7.3 for Symbian
Show Details
Installer Error
Error during installation process(com.nokia.ndk.tools.symbian.symbuan3.473):
Could not open C:QtSDK/Sysbian/cache/sysbian3.7z for reading: no such file
or directory
Retry Ignore Cancel
Back Update Cancel
