N clients stop passing traffic with N mode enabled..

I upgraded an Omnitik UPA-5HnD AP to 5.18 along with upgrading the FW. I am now having issues with N capable clients not passing any traffic if N mode is enabled on the AP. If I disable all N mode on the AP there are no problems but as soon as I enable N mode on the AP clients stop passing traffic. They stay registered but the last activity counter will climb until I kick the client from the AP and you can’t communicate with the client at all.

Sent Support output files to Support along with description of the problem.

Thanks,
Chadd

What encryption are you using?

I had a random issue with one WPA AES key, another works just fine.

802.11n doesn’t support WEP if you are using it.

Thanks for the info, this was an older AP of ours that was replaced with the Omnitik so it may be using WEP. I will take a look at it and see.