We have added approximately 40 new devices to Opmanager, however most of them are un-viewable, receiving the following message for each of them:

We have run RepairDB, this did not work. We have removed the device using the "Quick Configuration Wizard > Delete Device", and attempted to re-add the devices one at a time, still have the same issue.

Could you please advise on how to resolve this problem? Seems to be happening more an more. We are only build - 11300.