Can no longer join Rustified dev branch server

When i try to join the server I get this long error message that says “Disconnected: Object reference not set to an instance of an object” and a whole bunch of other errors. I don’t know how to insert an image from my computer so I cant show the error, if theres a way plz tell me. The insert image button just brings up a URL link but my image is on my computer so it doesn’t have a URL.

you need to upload it to something like imgur to post the link here. use the one that looks like [img]http://blahblah /img]

[editline]15th April 2015[/editline]

Ah i fixed it by changing the beta in steam to dev mode. Not sure why I had to do that as i was playing the server just fine when i had no beta selected.