I suggest you download and save a new copy of za and then uninstall the existing one via control panel add/remove progs then reboot and install the new version. This might sort you out - I find this prog normally very good.
Huawei P10 review
1995-2015: How technology has changed the world in 20 years
An overview: What leading creative agencies are doing to improve diversity
New iPad, iPhone SE & Red iPhone 7 on sale now
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.