12/13/2012 04:33 AMI just recently upgraded to Mists of Pandaria only to find out that my EasyBuyOut addon no longer works. I found a similar addon called OneClickBuyOut, but that doesn't seem to be working either.
Posted by Erielle
The addon working/not working, is not tied to your account status in any way. Everyone from trials all the way up to MoP accounts has the exact same client installed, the exact same base UI, the exact same everything. So no matter what version of account you have, nothing changes with the UI, so it wouldn't have affected your addons working/not working.
Now if you last played before MoP was released, and recently returned, updated your client, and found that your old addons weren't working, that's a different story. The UI got a major overhaul when MoP dropped, and it changed for everyone. This also means that addons that used to work prior to MoP's release may not work anymore.
Also, even if you HAVE played since MoP's release, but not since 5.1 came out, the game may not want to load the addon because it may still have the old 5.0.x version number.
It could be that the addon DOES work, but you need to check off "load out of date addons" on the login screen. The game won't load addons that haven't had a version number upgrade unless you tell it to, even if the addons were unaffected by the UI changes.
It could also be that sometime between when the addon was posted on curse/wowinterface, it's creator decided to not update it anymore and it's been abandoned. If that's the case, it's time to find a new addon.