I found the folder name was incorrect and needed to be fixed to allow it to work:

* The folder name needed to be WhoPinged for it to work.

It would be great if multiple pings from the same person in under a specified time were able to be grouped:

e.g. <player> pinged <time> [4]

If they pinged 4 times in the last 15 seconds it'd say 4 in brackets.

By default making any pings in the last 15 seconds by the same player grouped would save spam in the often critical chat box (so critical I often turn Guild filter off when in Battlegrounds).

Knowing who pinged, then being able to check where they are on the Battleground mini-map, is information that can prove critical in any closely contested match. So if that duplicate message control (which could be set to a customised time delay) was added this AddOn would be virtually complete.

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Inwe Anwame - Luna Spellsinger