Add Object Bullet Bug

When I add an object with the Add Object Actuator, occasionally it becomes “Ghost” just out of the blue (stops interacting with other objects – they go right through it). The problem does not exist in Sumo, so I know that it is a Bullet bug. Are there any workarounds for this bug (other than using Sumo)?

You mean this?
http://blenderartists.org/forum/showthread.php?p=896941

i had a similar probelm -if you are using collision - check the true button on your sensor?

I am not using any collision sensors.

Yeah, that’s it. I’m trying Erwin’s fix now.