I keep running into this issue with grids of a "bad client." I believe the issue comes from people logging out. Since I use their keys to place their names on the grid, when they log out, bad things happen. How would I get around this issue?
Add their key to a list somewhere as a text string, then address it from that instead of their client/mob. If you need to remove it when they log off, just remove it from the list and update the grid accordingly.
In response to Robertbanks2
Ah, thanks a ton Robert