Norton 360 & Target.com coupons

I have MS Windows 8.1 - Explorer 11 - Norton 360.  After the last updates to Norton 360 I'm unable to print coupons from Target.com.  It comes up causing my IE to stop working - I then get a Norton message saying An intrusion attempt by print.couponnetwork.com was blocked.  Web Attack:  Suspicious Executable Image Download. 

 

I'm wondering why the firewall would start blocking this all of a sudden.   Also - what can I do to fix this?  My wife loves to print coupons and now all of a sudden this is happening.

 

Any help would be greatly appreciated!

 

Thankis!