DMVPN spoke to spoke not established

Question

In the topology attached I am advertising tunnel ip and loopbacks for the specific hub and spokes in their eigrp , there is connectivity between all but still Eigrp routes are not coming and its flapping.ISAKMP is on , tunnel is also up.I am also attaching hub and spoke configs and topology  for your reference.
This is the error message:
7:09.791: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 145: Neighbor 172.16.145.5 (Tunnel0) is down: retry limit exceeded
*Mar  1 00:57:11.351: %CRYPTO-4-RECVD_PKT_INV_SPI: decaps: rec'd IPSEC packet has invalid spi for destaddr=10.1.12.1, prot=50, spi=0x77DF7896(2011134102), srcaddr        in use settings ={Transport, }
        conn id: 29, flow_id: SW:29, crypto map: Tunnel0-head-0
        sa timing: remaining key lifetime (k/sec): (4405256/3495)
        IV size: 8 bytes
        replay detection support: Y
        Status: ACTIVE
*Mar  1 00:57:21.895: YPTO-6-PRINTABORT: deletion caused early termination of show output for identity
R1#
*Mar  1 00:09:49.443: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 145: Neighbor 172.16.145.4 (Tunnel0) is down: retry limit exceeded
*Mar  1 00:09:50.051: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 145: Neighbor 172.16.145.4 (Tunnel0) is up: new adjacency
*Mar  1 00:11:00.311: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 145: Neighbor 172.16.145.5 (Tunnel0) is down: retry limit exceeded
*Mar  1 00:11:00.775: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 145: Neighbor 172.16.145.5 (Tunnel0) is up: new adjacency
*Mar  1 00:11:09.575: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 145: Neighbor 172.16.145.4 (Tunnel0) is down: retry limit exceeded
*Mar  1 00:11:11.551: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 145: Neighbor 172.16.145.4 (Tunnel0) is up: new adjacency

Answer 1

For some reason, my spoke to spoke tunnel doesn't stay up when my hub goes down. Not sure what I am missing. Please help!!
Hub:
interface Tunnel0
 ip address 172.16.1.1 255.255.255.0
 no ip redirects
 no ip next-hop-self eigrp 10
 no ip split-horizon eigrp 10
 ip nhrp authentication _GW_
 ip nhrp map multicast dynamic
 ip nhrp network-id 1
 no ip split-horizon
 ip summary-address eigrp 10 10.1.0.0 255.255.0.0
 tunnel source 1.1.1.1
 tunnel mode gre multipoint
 tunnel protection ipsec profile dmvpn
end
spoke 1: 
interface Tunnel0
 ip address 172.16.1.7 255.255.255.0
 no ip redirects
 no ip split-horizon eigrp 10
 ip nhrp authentication _GW_
 ip nhrp map multicast dynamic
 ip nhrp map 172.16.1.1 1.1.1
 ip nhrp map multicast 1.1.1.1
 ip nhrp network-id 1
 ip nhrp nhs 172.16.1.1
 ip summary-address eigrp 10 10.7.0.0 255.255.0.0
 tunnel source GigabitEthernet0/0
 tunnel mode gre multipoint
 tunnel protection ipsec profile dmvpn
end
Spoke 2:
interface Tunnel0
 ip address 172.16.1.6 255.255.255.0
 no ip redirects
 no ip split-horizon eigrp 10
 ip nhrp authentication _GW_
 ip nhrp map multicast dynamic
 ip nhrp map 172.16.1.1 1.1.1.1
 ip nhrp map multicast 1.1.1.1
 ip nhrp network-id 1
 ip nhrp nhs 172.16.1.1
 ip summary-address eigrp 10 10.6.0.0 255.255.0.0
 tunnel source GigabitEthernet0/0
 tunnel mode gre multipoint
 tunnel protection ipsec profile dmvpn
end