GUN_BIGGER not triggering properly?

[RHINO_Mk.II]

Are you using a custom voice pack? Can you make sure there's a sound file for it? It should still play the pop-up regardless though..

Okay, so after more testing, it seems that with the default voice pack it works fine, but when I tested with custom voice packs it was broken. I tried two voice packs, one with a new line for GUN_BIGGER and one with the default line for GUN_BIGGER but other custom sounds. Neither voice pack played the achievement.

EDIT: Even more strange, using the default voicepack and having changed the sound for that particular achievement only, it's working.

EDIT EDIT: Okay, published the above voice pack and it now works when I load it, older voice packs are still not playing that achievement.

FINAL EDIT: Just re-published my voicepack after resetting the sound to default and selecting it again. Seems to be working now. Still doesn't work with the older version. Would hardly believe myself if not for that. Just gonna drop it at this point.