There is a known issue with AVG Antivirus.
In that AVG will see the CaterQuotes Report generator as a treat and move it to the Virus Vault.
To remedy the immediate problem, simply restore the reports file from the virus vault.
Open AVG _ Select Options - Virus Vault - select the file AQ8.Reports.exe and click restore file.
Also exclude this from your Exceptions List to prevent this happening in future