Well if you got the one from finishing Clara and Jessie, and you have already gotten the ones in Natasha's house and the boiler room. Then the it must be off the clown zombie in the town hall. That's is all five locations. If you think you bugged something out I can modify your save if you want.
Swamp zombies can drop them and the loot spots in the lake view area also have a chance to drop them but yeah, they're elusive.
If your going for the first antidote you want to go to the lake view area and go to the area near the lake. You will see some areas with blue dots you can pick them up that way. Partying up with Natasha and killing the swamp zombies are the only ways to get them at that point.
After playing your save I see what you did. When you kill the clown zombie he drops a note indicated by the sparkle. That will give you the last vending token. Since there was nothing wrong with your save I will leave it for you to get.
The gallery was removed from the bathroom several updates ago. To access the gallery you need to enter the in game gallery. If you are using a completed save then all you need to do is interact with the video game console in the MC bedroom. That will take you to the gallery and access to the mod rooms.
Usually that comes up when using the compressed version, but if you are not using it and still getting errors that is weird. Can you tell me exactly what the error is saying, or share a screen shot.
I came back to the scenes giving me issues after seeing others and it stoped weird
Chances are you are missing the one in boiler room. That is the room Ashley was in before you rescued her. The others you will get naturally as you play.
