Side by side config incorrect

Hello Elizabeth,
I'm sorry to hear about this, please share a screenshot of the error message to assist you further.You can check the following link to see the instructions about taking the screenshot (http://support.avg.com/SupportArticleView?urlname=How-to-create-a-screenshot).
Best regards,
Alok.

Once I download the AVG Ultimate and restart my computer, I receive an error message stating the application has failed to start because the side by side configuration is incorrect.  I am not a techy and have no idea what this is or how to fix it.  Any suggestions welcome.

Hello Elizabeth,
I'm sorry to hear about this, please share a screenshot of the error message to assist you further.You can check the following link to see the instructions about taking the screenshot (http://support.avg.com/SupportArticleView?urlname=How-to-create-a-screenshot).
Best regards,
Alok.

Elizabeth, For your info, just in case that you are unaware, you can post the screenshot here in your topic. Click on 'Answer' & then click on the 'Image' [mountain symbol] & follow the instructions. 
AVG Guru