Well I have been running AutoRank on my server for a while now and I had a few issues but i managed to get through them. Now I have something new I'm not sure if it is critical or not but upon start-up and mid-running of the server it just keeps giving me this set of messages:

28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at java.lang.Thread.run(Unknown Source)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.UUIDManager$2.run(UUIDManager.java:222)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.NameFetcher.call(NameFetcher.java:51)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: java.lang.Exception: Could not parse uuid to name!
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at java.lang.Thread.run(Unknown Source)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.UUIDManager$2.run(UUIDManager.java:222)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.NameFetcher.call(NameFetcher.java:51)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: java.lang.Exception: Could not parse uuid to name!
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at java.lang.Thread.run(Unknown Source)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.UUIDManager$2.run(UUIDManager.java:222)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.NameFetcher.call(NameFetcher.java:51)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: java.lang.Exception: Could not parse uuid to name!
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at java.lang.Thread.run(Unknown Source)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.UUIDManager$2.run(UUIDManager.java:222)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.NameFetcher.call(NameFetcher.java:51)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: java.lang.Exception: Could not parse uuid to name!
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at java.lang.Thread.run(Unknown Source)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.UUIDManager$2.run(UUIDManager.java:222)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.NameFetcher.call(NameFetcher.java:51)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: java.lang.Exception: Could not parse uuid to name!
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at java.lang.Thread.run(Unknown Source)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.UUIDManager$2.run(UUIDManager.java:222)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.NameFetcher.call(NameFetcher.java:51)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: java.lang.Exception: Could not parse uuid to name!
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at java.lang.Thread.run(Unknown Source)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.UUIDManager$2.run(UUIDManager.java:222)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.NameFetcher.call(NameFetcher.java:51)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: java.lang.Exception: Could not parse uuid to name!
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at java.lang.Thread.run(Unknown Source)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.UUIDManager$2.run(UUIDManager.java:222)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: at me.armar.plugins.autorank.util.uuid.NameFetcher.call(NameFetcher.java:51)
28.07 06:06:26 [Server] INFO [06:06:26 WARN]: java.lang.Exception: Could not parse uuid to name!
I'm not sure what else you need, let me know.

Closed.

Download the latest dev build, reset your data.yml and playerdata.yml and run /ar convert for both files.