Viruses created from cells bounce off of other cells even though they aren't infected.

[Algoooo]

The only way I can infect a cell is by manually throwing a virus at it. After the viruses reproduce and leave the cell, they just bounce off the other uninfected cells, as if they were infected. Redownloading the game seems fix it, but the problem is back when I close it and open it back up. So I would have to redownload it every time I want to reset the map. Also I didn't change the code at all. When I close programming 3.3.3 it doesn't say anything about saving changes like it usually would.