What version are you running?
2.5.6.1
What's the URL of the page containing the problem?
/admin/settings/ssh/
(live URL not accessible outside of local network)
What steps will reproduce the problem?

Generate an SSH key or upload an existing SSH key

What is the expected output? What do you see instead?
I'd expect a success message and key details - I get no feedback (except when uploading where I get the Uploading SSH key failed message.
Logs:
2016-06-11 15:30:05,570 - ERROR -  - Uploading SSH key failed: 'EntryPoint' object has no attribute 'resolve'

2016-06-11 15:30:06,884 - DEBUG -  - Cache miss for key jsi18n-djangojs-reviewboard_djblets-en-1465601016.
What operating system are you using? What browser?
CentOS release 6.8
Linux 2.6.32-573.26.1.el6.x86_64 #1 SMP Wed May 4 00:57:44 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
Please provide any additional information below.
Haven't seen any reports of this, so I'm guessing I'm missing a package or something... or maybe the system is tring to upload the key somewhere where there is no write access.  Either way, I'm not seeing any of that in the logs :(