@Rathol The crash log looks to be a from an older version of the Blizzard app. If its not updating, let's uninstall the app through control panel. Once done let's make sure to delete the Blizzard cache. We can re-download the app from here.
@MachineGun Your crash logs aren't providing too much info. I'd try the 32 bit client but if there's still issues, let's grab a DxDiag report.