Ah I saw your previous screenshots. It appears its failing to establish the IPSec tunnel.
The traffic needed between MCs =
(IPSec Phase 1) ISAKMP UDP 500
(IPSec Phase 2) ESP IP Protocol 50
Truly make sure theres no fw or acls between.
MC-01:show crpyto isakmp sa
MC-01:show crypto ipsec sa
Setting up debug to see what's failing:
MM1 [md] (config) # change-config-node MC-01
config t
logging security process authmgr level debug
logging security process crypto level debug
logging system processs cluster_mgr level debugging
wr me
MC-01# show log security 100
Buried in here will tell us if its Phase 1 or Phase 2.