Lost Treasure Check

Version 2.3:

• Added treasure items for the following zones
  • Shadowmoon Valley
    
  • Lunarfall (Alliance Garrison)
    
  • Gorgrond
    
  • Talador
    
• More zones to come in a future release.

Version 2.2:

• Fixed an issue where Timeless Isle waypoints were incorrectly placed in the Vale of Eternal Blossoms.
  
• Fixed an issue where the addon would claim no items had ever been discovered.

Version 2.1:

• Updated version numbering to be compatible with 6.0.2 patch.
  
• No other changes.

Version 2.0:

• Added support for multiple spawn coordinates per item.
  
• Added support for all Pandaria treasure items.
  

Issue: Item links are not always displayed the first time you run a check.
Source: As far as I can tell this is a limitation with the WoW API. Item link lookups return nil if that item isn't in your computer's local cache, and the game doesn't necessarily add the item to your local cache when requested.
Solution: Currently the only work around is to run the check another time. For the future I'll be looking at ways to either force adding the items to the cache when they are looked up, or, more likely, caching the links themselves in the SavedVariables folder so I only need to look them up once.