I have installed EssentialsX and my sign shop will allow me to build the sign but won't display any text nor will it allow me to use it. Any ideas?

have you enable the functionality in the list ?

Essentials

[http://pastebin.com/UeXBAz0H]

To use code blocks on GitHub, wrap them with three backticks (`)

It's much easier to use a paste site like Gists though.

Could you paste the output of /ess debug?

in fact if your sign is bad, the sell or buy is in red.
if nothing appear in sign it's probably another plugin in cause.

i think...

Here is my plugin list.

http://prntscr.com/d3einy

I'm going to mark this as a duplicate of #687. Where you have needed to update your Spigot server software to fix the bug. However there's a chance you have already done this since 1.11 has been out. If I am mistaken please reply with your startup log.

Steps:

1. Open logs directory in server directory.
2. Find and open a file called latest.log.
3. Go to www.pastebin.com.
4. Copy all latest.log contents and paste into the big text area.
5. Copy & paste the URL in your browser into a reply here.