Received following email overnight from AVG:
Dear Sir/Madam,
Thank you for your email.
We did an analysis of this file you have sent to us and we can confirm that the detection is false positive. We apologize you for all inconvenience caused by the false detection of sent file. The detection will be removed in the next virus base update.
If you need to restore this file from the AVG Virus Vault, please open this Vault (in AVG -> upper menu Program -> Launch Virus Vault), right-click on the file and
choose "Restore File". The file will be placed to its previous location.
Thank you for your understanding and cooperation.
Best regards,
Pavel Matejek
AVG Technical Support