Not so long ago, an exploit was found with the door tile, which seem to bypass TShock’s protection protocol. This allows hackers to spawn massive amounts of doors and basically destroy whole servers. We’ve found the issue at TShock and there are currently two fixes, which will be listed below.
Box managed to join the server while it was falling apart, and through the 1 minute lag caused by the massive tile spawning, I managed to tell him to shut down the server without saving. This means the last save should be the previous autosave, no more than 24 minutes earlier, so I don’t expect a lot to have been lost.
One of the fixes, the easiest one, is to paste this plugin in your ServerPlugins folder. It will stop doors from spawning and breaking tiles.
Link: https://www.dropbox.com/s/mb9e817o73bo3az/DoorSentinel.dll
Simon (one of the devs) also commited a fix to be implemented in core TShock, but it’s still to be accepted. It does seem to be functional at the moment, and if you wish you may try and build tshock yourselves. Link to Simon’s PR
This should be fixed pre-emptively, and preferentially before bringing the server back up. It will simply fall apart once more, otherwise.