Error in Installing AVG 2011 edition

Hello there!
Before I tried to install the 2011 edition, I used AVG 9.0. When I began installing 2011 edition, the 9.0 edition was deleted. In the end, I could not setup 2011 edition. It showed me the following error message:
Setup error
Error code: 0xC0070643
Error message:General internal error.
Additional MESSAGE: MSI Engine: Failed to install the product.
Context: AVG product installation
How can I solve this problem? Please share your answers. Thanks a lot.
