Game crashed when reaching round 20 in Black Ops 2 zombies Tranzit

[Mr_Noble54321]

Hey when I try to beat the Tranzit easter egg solo when I reach to round 20 game always run into problem or crash can anybody help me with this?... Never happened to other maps...

[WolflexZ]

Not sure if this is still an issue/bug, but the jetgun can cause crashes.

[Mr_Noble54321]

WolflexZ Maybe just maybe cause I used the jet gun in the easter egg step cause it is required for the Richtofen side