Ross, please follow these steps to send us diagnostic information from your computer. This information will allow us to analyze the situation and provide you with solution:
1.Click this link http://www.avg.com/filedir/util/AVG_SysInfo.exe to download the AVG SysInfo tool.
2.Run the downloaded tool.
3.Click Accept to confirm the license agreement, and then click Continue.
4.Once the screen Output created is shown, fill in any additional details, or click Attach if you want to attach any additional files, such as screenshots.
5.Click Send, fill in your email address, and then click Send again.
6.Reply to this email and let us know that you have sent us the export.
We will analyze the received files and provide you with further information.
Ross, Is it MyPC Backup or JustCloud?.. If so, Have a look @ this article (http://avgclick.me/JustCloudPUP).
AVG Guru
I added the exception, temporarily disabled AVG in order to download a new setup executable and re-installed for the thirteenth time today, started a backup and re-enabled AVG…and AVG has just deleted the program again 
Despite adding my backup software solution as an exception to AVG it continues to keep deleting it., As a result my files are now not being backed up and this is as worrying as getting an infection. Anyone help me please? This used to happen periodically but now I cannot even manage to reinstall the software for backup!
Ross, Is it MyPC Backup or JustCloud?.. If so, Have a look @ this article (http://avgclick.me/JustCloudPUP).
AVG Guru
Ross, thank you for sending the requested information. We will analyze the data and get back to you soon via email. Thank you.
I added the exception, temporarily disabled AVG in order to download a new setup executable and re-installed for the thirteenth time today, started a backup and re-enabled AVG…and AVG has just deleted the program again