Karaoke Superstar Achievement Didn't Unlock

[NoMercy Rider]

Anyone else have this problem? I go up to the karaoke machine, have unlocked all eight songs and each song has a score between 98% and 100%. Yet the achievement never unlocked.

Could this have to do with intentionally doing terrible on a song for the "Real Men Don't Sing Karaoke" favor mission? Maybe I will just re-sing all the songs in a single session and see if it unlocks then. Just don't want to go through all that work for nothing.

[joanlluisserra]

Maybe it's a server connection problem...