Performance Monitors not working on newer Cisco routers 4331 and 4351

Performance Monitors not working on newer Cisco routers 4331 and 4351

op manager automatically enables a bunch of performance monitors on our old Cisco 3945s and 2911s.  However, on the newer Cisco routers (4351 and 4331) op manager doesn’t enable ANY performance monitors.  And when I try to add them manually, it fails.  Help!

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