AVG update to newer version fails

I keep getting an Unexpected error code when trying to update my free AVG installation:(error code 0xc007001d).  If anyone could please assist it would be greatly appreciated.  I am running XP service pack 3.

Thank-you in advance for your assistance! 

Hello Dean,
We would request you to run AVG remover tool to completely remove AVG and then re install it.  
Please  click this link http://download.avg.com/filedir/util/AVG_Remover.exe to download and run the AVG Remover tool.
1. Please select the AVG products which are shown in the remover tool window and then start removal process.
2. After the remover tool process is successfully finished, restart your computer.
3. After the restart,  manually delete the AVG Remover folder in the C drive of My computer.
4. Once uninstalled download the installation file using the link : http://www.avg.com/download to reinstall your AVG program.
Please feel free to get back to us for further assistance.
Thank you.