Every day since installing Vessel of Hatred after playing between 15 and 20 mins I got that Data Error message. This morning, I received that message before the update even started and when tried to run the Scan and Repair got another error stating that there was an error with the Battle.Net client… that of course even after a restart was still there. I have been playing Diablo IV since alpha and NEVER had any errors like this before. I also do not remember any release since it went live where there were so many patch updates delivered, sometimes up to 3 a day since VoH released. The changes made to the game are what broke it (level nerfing, Spirit Born, complete lack of code testing). All signs that Blizzard has become a group of artists and tossed all the good coders on the street. I blame Activision, but doesn’t Microsoft own it now? That may be why Diablo will be forever in beta, just like all Microsoft products, released before completion. It’s uninstalled now, giving back precious disk space to do something different. Maybe continue to pursue my Doctorate in Cyber Security? Set up an Amazon Store?
I have the same issue! so frustrating. Reinstall doesnt help.