AVG blocks clickonce

Hi,
We encounter the following problem: on our customers  computers using AVG Antivirus FREE 1606, a clickonce installed application (developed by us) is removed from the system by the antivirus after install/update. The install kit is signed with a certsign certificate. The av message is:
Threat: General behavioral detected.

Hello Razvan,

We are sorry for the inconvenience caused.
For security reasons some of the applications will be detected as a threat by AVG Antivirus, however if they are trusted it can be added to the AVG's exception list as mentioned in this article: http://avgread.me/18WB2dg as a temporary solution.
Before adding it to the exceptions please submit the threat detected sample to us through this link: http://www.avg.com/submit-sample .
Please feel free to contact us if you need any assistance.