One of your add-ons is causing some kind of huge function calling chain whenever someone dies. Probably a zombie/bot add-on or some kind of deathmatch/gamerules add-on or perhaps a combination of several.
One of your add-ons seems to be calling WeaponImage::OnMount directly, which is stupid and is causing a large number of error messages.
You are running the old version of IGSO which causes "noshiftmovemap" error to appear. I am adding this to the remote fail list right now.