Problems with Firmware Upgrades using Extreme Management Center

I've been trying to get this sorted on our DEV switch all week and so far keep hitting the same problem. The firmware is downloaded and installed to the secondary partition, but it then it just does not reboot.

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The logs are less than helpful:

EXMC:
2019/11/14 1:30:00
Executing commands as USERNAME via PROTOCOL:

2019/11/14 1:30:07
Executing commands as USERNAME via PROTOCOL:

2019/11/14 1:33:50
Firmware Download summitX-22.7.1.2-patch1-11.xos(2): (IP) - Operation Complete. Downloaded summitX-22.7.1.2-patch1-11.xos :

2019/11/14 1:33:50
Check Device Status: (IP) :

Switch:
11/14/2019 01:33:50.42 <Info:AAA.logout> Slot-1: Administrative account (USERNAME) logout from PROTOCOL (IP)
11/14/2019 01:33:50.42 <Info:AAA.logout> Slot-1: Previous message repeated 2 additional times in the last 1 second(s)
11/14/2019 01:33:20.01 <Noti:EPM.install_status> Slot-1: User USERNAME: Image installation finished with status success.
11/14/2019 01:31:39.08 <Noti:EPM.Upgrade.Strt> Slot-1: User USERNAME: Image upgrade has started.
11/14/2019 01:31:38.96 <Noti:EPM.DnldStatus> Slot-1: User USERNAME: Download of image finished with status success; Image integrity check passed.
11/14/2019 01:30:26.47 <Noti:EPM.Upgrade.DnldImg> Slot-1: User USERNAME: Download image from hostname ip address IP file name FILEPATH/summitX-22.7.1.2-patch1-11.xos VR VRNAME
11/14/2019 01:30:12.96 <Info:AAA.LogSsh> Slot-1: Msg from Master : Did password authentication for user USERNAME (IP)
11/14/2019 01:30:12.96 <Info:AAA.authPass> Slot-1: Login passed for user USERNAME through PROTOCOL (IP)
11/14/2019 01:30:07.51 <Info:AAA.logout> Slot-1: Administrative account (USERNAME) logout from PROTOCOL (IP)
11/14/2019 01:30:07.50 <Info:AAA.logout> Slot-1: Previous message repeated 3 additional times in the last 1 second(s)
11/14/2019 01:30:03.01 <Info:AAA.LogSsh> Slot-1: Msg from Master : Did password authentication for user USERNAME (IP)
11/14/2019 01:30:03.01 <Info:AAA.authPass> Slot-1: Login passed for user USERNAME through PROTOCOL (IP)

I have made sure that the "restart devices after upgrade" tick box is checked but it seems that the reboot script simply isn't called

Any advice would be greatly appreciated