Running on a live world causes tile corruption

[magneticflux-]

It appears that chunks touched by the server during a render may be swapped or otherwise corrupted: overviewer/Minecraft-Overviewer#1178.

A workaround is to RCON into the server and run /save-off and /save-all before the render and run /save-on after the render.

[mide]

I haven't had a chance to look, but hope to soon.

[mide]

This will be solved by #54. It's an upstream issue, but we're working on adding the workaround.