Ui error for addons

[twitchybear8192]

I use minion 3 and installed the master merchant addon and when I go to the bank and click guild store it just comes up with an error message and I don't know why. Have I missed something or have not downloaded the right one.
Also I have another error message come up when I start the game. Could realy use some help to fix this.
Sorry had to really crop them down