Can't launch avg

I have had AVG ultimate for a year. I had to go back to a 1 months restore point. Now my AVG won't launch. . My message box title is "avgui.exe- Entry Point Not Found" In the box is:  The procedure entry point ?PreCreateWithMsgLoop@SysTrayIcon@systray@common_ui@asw@@QAE_NPBUS_InitDescriptor@234HAA_N@Z could not be located in the dynamic link library Common UI.dll          Now what do I do???

Hi Pollard,
Thank you for reaching out to us with your concerns. This could be caused due to changes made to your OS during system restore. I would suggest you to uninstall AVG completely and re install it.
To uninstall AVG, follow the steps provided in this link:  http://support.avg.com/SupportArticleView?urlname=How-to-uninstall-AVG .
For re installation instructions, click on this link: http://support.avg.com/SupportArticleView?urlname=Download-and-install-AVG-Ultimate .