Client crashing when attempting to connect to the server

So I created my own master on 127.0.0.1 and it connect with the server fine:

https://gyazo.com/92c217f309e3c95dcb66e3a32d4a9b43

I see my server fine:

https://gyazo.com/8bdcc88541b01933da37456d1c36f1d7

I then try to join and this happens:

https://gyazo.com/77a0c8facb44c157bb524d3acd144c27

Server looks like this:

https://gyazo.com/c832575f36e48b800cb902d4653297bc

hope someone can help.

Just as a side note I made it public and my friends got the same error.

I see you're already using the work-in-progress upcoming version. It's not stable, I have to rewrite all the code which is currently commented out before you can use it again ;) Anyway I'll check if I can reproduce this. If you got any .RPT files in the folder from where you run the server, please upload them :)^

EDIT: Crash confirmed on New Vegas and the Steam versions of Fallout3 / Oblivion. Still have to get it properly working with the Steam versions.

Steam is a "pain in the ass" of every free game, because there is Steam version.