Strange errors(?) in console at launch

Server launch brings out these in the startup:

Code:

WARN Could not register alias stats because it contains commands that do not exist: sidebar $1-
WARN Could not register alias help because it contains commands that do not exist: gb $1-
WARN Could not register alias map because it contains commands that do not exist: dynmap $1-
WARN Could not register alias ping because it contains commands that do not exist: uping $1-

and

Code:

WARN Exception in thread "Thread-9"
WARN java.lang.ArrayIndexOutOfBoundsException: 1
WARN at ca.q0r.mchat.updater.Updater.versionCheck(Updater.java:365)
WARN at ca.q0r.mchat.updater.Updater.access$400(Updater.java:40)
WARN at ca.q0r.mchat.updater.Updater$UpdateRunnable.run(Updater.java:451)
WARN at java.lang.Thread.run(Thread.java:744)

Server is running 1GB Ram and has the following plugins:
Essentials
EssentialsProtect
EssentialsSpawn
mChat
bPermissions

Server is 1.7.5 bukkit

Any idea why these errors show up?
I haven't ran into these before but as much as I understand the

Code:

WARN at ca.q0r.mchat.updater.Updater$UpdateRunnable.run(Updater.java:451)

indicates that mchat updater isn't working properly, which is fine because otherwise it would try to update into better version but what about others?

 

Try removing plugin one at the time and check when the errors are gone. Then you know what plugin causes the errors and you can check the plugin page for help ore ask there for help. If I'm right mchat and Bpermissions are the only plugins that could cause the error.

 

First one is configuration error at commands.yml. Second and third is parts of the mchat updater error stacktrace, paste full stacktrace.

Use a pastebin

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

I have managed to fix the errors. The first one indeed was from commands.yml I do not know why but it had included some text which obviously wasn't even working. I highly doubt the server owner actually added anything into it himself but the stuff were already there when the server was made. Second error was just the mchat autoupdate issue, I changed the auto-update option from true to false and it no longer provided the error. The server is in 1.7.5 there for the plugins are "outdated" since most plugins are already updated up to 1.7.9 so autoupdaters might cry a lot. Thank you all for your help!