I increased the memory usage to 10mb. It said the game was only using 1kb and it still crashed while recycling. It doesn't happen every time but often enough to be a concern.
I've noticed that when speeding up the removal of junk around the compound the fuel cost is applied to the time remaining for 1 survivor regardless of how many survivors are currently working on the task.
I just wish the tracks were identified so I knew which ones to play for the achievements. Most are obvious but I don't know which one is the Anthill Track or the Stream Track
 "The Last Stand: Dead Zone"){kind=icon}
 "Legend of Pandora"){kind=icon}
 "Road of the Dead"){kind=icon}
 "Fancy Pants Adventure: World 2"){kind=icon}
 "Homerun In Berzerk Land: Berzerk Ball"){kind=icon}
 "Bloons Tower Defense 4"){kind=icon}
 "Cursed Treasure: Don't Touch My Gems!"){kind=icon}