generator 1 will not activate

[Zombalam]

I had just finished doing all the side quests except finding the glowing mounds on round 21 solo and the agarthan zombies started attacking the generator as per usual. I had my first down and when the round was nearly over I started re-activating the generators and every one would activate except generator one. When i press square the icon to activate disappears for a few seconds, no money is taken and no agarthan zombies show up leaving me without quick revive. If im lucky i can pull one from der wunderfizz. Has anyone else had this problem?

[InfestLithium]

The game either glitched and won't allow you to activate the generator for some reason or it's because the generator is already active (for some reason) but the game is treating it slightly as if it's not.