Visual Tests fails because of a popup

Hello,

I am using Silk test V 18.5, browser FF V 56.0.

Q1. After recording Visual test, when I playback popup blocks the test run, even though in my recording I clicked ok to pop-up.

Q2. When I use .NET script while recording I get pop up \Modal Javascript dialog present. Dialog has to be closed programmatically to be able to continue.\ 

Its my 2nd day using Silk test, go easy one me!

Thanks!