Here is the errors that pop up in chat:

[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 0
[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 1
[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 2
[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 3
[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 4
[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 5
[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 6
[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 7
[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 8
[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 9
[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 10
[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 11
[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 12
[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 13
[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 14
[17:28:37] [Server thread/WARN] [OpenMods/]: openblocks.common.MapDataManager$MapDataResponseEvent.writeToStream(MapDataManager.java:85): Trying to propagate invalid map data 15

Any idea what is causing this? Is it a bug, or is something wrong with our server 's configuration?

Thanks,
MastaC

Thanks

It's not caused by anything server side, it's just NEI trying to display item that should be ignored. Harmless.