Dropbox can't establish secure internet connection
I have Macbook Pro running OS 10.10.2
I am running Kaspersky Internet Security version 14.0.1.46d.e
My problem is if I have KIS turned on, dropbox will not sync folders and I get the message "can't establish a secure internet connection". If I turn KIS off, then dropbox can sync. I can not find an option in KIS to allow specific applications?
Can anyone provide any advice or insight into this issue? I did not have this problem on my older Macbook Pro running OS X (can't remember exactly which version).
MacBook Pro (Retina, 15-inch, Mid 2014), OS X Yosemite (10.10.2)