Comodo CertSentry message keeps appearing!!

Hello,

I recently updated Comodo Dragon and ever since this, I keep receiving the following message:
“Install CertSentry v1.11 now?” in a message box (please see attached picture).

I also randomly hear system notification sounds in the background without any message displayed!! I scanned my PC using Comodo Cleaning Essentials, Kaspersky IS 2014, and MalwareBytes and I did not find any virus.

Thanks!

Btw: It does not matter on what you click (Yes or No), nothing seems to happen and the message keeps appearing…

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