The option comes up and the list appears just like any other trader, but nothing on the screen is clickable? It looks like its not properly appearing and is slightly greyed out looking? Do I have to complete the whole questline or is it a graphics bug?

I have the same problem. The Trade Menu comes up but I can only sell but not purchase.

If it's anything like the problem I had, then the select locations are off. For buying, try going a little more to the right, like right past the letters of the item's name.

I got all the upgrades, but my place looks the same. Wack.

Aye, same issue here, except my box location is a little to the right of the "scroll bar" in the list to buy stuff.

Itkovian

I had same problem but I figured a work around using the tab keys and up and down keys to buy or sell stuff------ I thought it was just my computer problem but it looks like some other people having problems with interface

So FYI the mouse does not work very well when using that lucky room computer

If you get it to work, be careful. One of the trunks by the workbench is set to respawn and it will eat your stuff. I can't remember which one.

Same. I had to click them in the top right corner of the box.

I ended up deciding against getting anything. I guess I didn't look too hard initially but I don't really wanna spend that many caps on 'items'. I hoped it would be theme type stuff like in FO3.

I have this same sort of interface issue when playing Caravan as well. Used the same solution: Tab and arrows keys to navigate.