If I restart my Server or relode the plugins, the anchors I set are away.
In the Server direction they are still alive but they are not ingame useable.
If I use the command /mv anchor, I will see a list with only the anchors I set before the plugins or server was relode.
Here the server errors I get by the last relode:

2012-04-30 15:36:15 [INFO] [Multiverse-Core] 5 - World(s) loaded.
2012-04-30 15:36:15 [WARNING] [Multiverse-Core] The location for anchor 'Leuchturm' is INVALID.
2012-04-30 15:36:15 [WARNING] [Multiverse-Core] The location for anchor 'oSkyland' is INVALID.
2012-04-30 15:36:15 [WARNING] [Multiverse-Core] The location for anchor 'skycity' is INVALID.
2012-04-30 15:36:15 [WARNING] [Multiverse-Core] The location for anchor 'dead' is INVALID.
2012-04-30 15:36:15 [WARNING] [Multiverse-Core] The location for anchor 'oskyland' is INVALID.
2012-04-30 15:36:15 [WARNING] [Multiverse-Core] The location for anchor 'lol' is INVALID.
2012-04-30 15:36:15 [WARNING] [Multiverse-Core] The location for anchor 'list' is INVALID.
2012-04-30 15:36:15 [INFO] [Multiverse-SignPortals] Enabling Multiverse-SignPortals v2.4-b523
2012-04-30 15:36:15 [INFO] [Multiverse-SignPortals] - Version 2.4-b523 Enabled - By Rigby and fernferret
2012-04-30 15:36:15 [INFO] Server permissions file permissions.yml is empty, ignoring it
2012-04-30 15:40:13 [INFO] Connection reset