It seems if you set a landmine off inside of a grief revert field it sometimes crashes the client to a blue screen. I noticed after deleting my player.dat file to get back on the server that /ps counts was still showing the landmine field as existing.

When I traveled back to the area, same thing client crashes. When I have someone else enter the area their client crashes as well. Though they do seem to still be in the game, and can be teleported out of the area.

I ran /ps clean to remove the orphaned field followed by another trip to the area. Same problem client crashed. Deleted my player file, rejoined and everything seemed fine.

I ran the client from the command line to see if I could generate some output during the crash. Unfortunately I was unable to reproduce the error after 3 tries. I would have kept going but my helper was bored of getting blown up.

This is the second time this has happened, which for me is no big deal. The mines are an admin toy. So if something goes wrong we know right away. Sorry for the lack of any specific details or error logs. Maybe it will be a forehead-smacker?

fixed in 5.5.5