Hello Miguel,
I apologize for the inconvenience. It seems that the AVG got corrupted while updating. Please repair AVG Internet security/ AVG Protection http://support.avg.com/SupportArticleView?urlname=How-to-repair-AVG from the control panel and restart your computer. If the issue persist, please contact us to assist further.
Thank you for providing the screenshot. I have emailed you a link to get connected to the advanced support. Please follow the same and the concerned team will check this for you.
I've done this twice… no luck, it doesn't fix it. Any other suggestion?