A family of System Center products that provide infrastructure monitoring, help ensure the predictable performance and availability of vital applications, and offer comprehensive monitoring for datacenters and cloud, both private and public.
As per error said, modify the folder "TempImages" folder under e:\operations Manager\WebConsole\MonitoringView, the path is depend on your webconsole installation path, permission.
From my experience, i just grant the "Authenticated Users" permission to read and write.
Roger