MacBook Pro messaging reset

My MacBook pro is no longer allowing me to us messaging to sync my number and send and recieve message from my phone number. Is there a way to reset messaging on my computer to get back to original settings?
I have seen suggestions of manually adding my phone number, but everytime I have tried the number goes away after pressing enter.

Read this whole message before doing anything.
Back up all data.
Quit Messages if it’s running.
Step 1
Hold down the option key and select
Go ▹ Library
from the Finder menu bar. Move the following items from the Library folder to the Trash (either may not exist):
Caches/com.apple.Messages
Caches/com.apple.imfoundation.IMRemoteURLConnectionAgent
Leave the Library folder open. Log out and log back in. Try Messages again. If it works now, stop here. Close the Library folder.
Step 2
If you still have problems, quit Messages again. Go back to the Finder and move the following item from the open Library folder to the Desktop:
Messages
Note: you are not moving the Messages application. You’re moving a folder named “Messages.”
Test. If Messages now works, delete the Messages folder on the Desktop. Otherwise, quit Messages again. Put back the folder you moved, overwriting the newer one that may have been created in its place, and continue.
Step 3
In the Preferences subfolder, there may be several files having names that begin with any of the following strings:
com.apple.iChat
com.apple.imdsmsrecordstore
com.apple.imessage
com.apple.imservice
Move them all to the Desktop. There may also be a file with the name "com.apple.imagent.plist". Move that to the Trash.
Also in the Preferences folder, there's a subfolder named "ByHost". Open it and do the same thing.
Log out and log back in. Test again. This time Messages should perform normally, but your settings will be lost. You may be able to put back some of the files you moved to the Desktop in this step. Relaunch and test after each one. Eventually you should find one or more that causes Messages to malfunction. Delete those files and recreate whatever settings they contained.
If the issue is still not resolved, quit Messages again and put all the items you moved to the Desktop back where they were. You don’t need to replace the items you moved to the Trash. Stop here and post again.
If you later decide that you don’t like the results of steps 2 and 3, you can undo them completely by quitting Messages and restoring the items you deleted in those steps from your backup.

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Thanks, Tim. I will try your suggestions. I've been tinkering on my own with this problem, and a pattern may be emerging. I was asking myself, why DID I have internet access from the MacBook Pro the other evening and at no other time through a wireless connection since the 10.6 upgrade, save the fleeting moments when AirPort has just been turned on? Well, that seems to be the only time that the MacBook was connected to AirPort FIRST.
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when i turned on my macbook pro this morning I got a message saying that the clock was set to a date earlier than 2008 (the actual date was 1/1/01) and this may cause problems. I also got a load of messages asking me to authorise a load of things ive never heard of network access.
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i put a screenshot up here http://www.flickr.com/photos/tomdefyinglife/5071088338/

pipelineoptika wrote:
It's installed, but haven't used it in many many months. Perhaps 8?
It's still there . . . .
Be advised - I'm a programmer, and often cause issues with my machine due to bad code. The system itself is clean, however.
I highly recommend running Time Machine, then you can always go back and undo what you did/get what you need. In addition, I clone to an external HD, then I can boot to it and do almost anything I want to mess it up, and still just reboot to my "good" internal HD (or vice versa).
Here's the system log for the event in question. Sequence of events:
- Shut down machine (I usually sleep it)
- Machine has 30% battery
- Left overnight - still has about 30% battery in the morning
- Power on - clock has been reset.
For reference, my machine name is arumi:
Oct 12 23:29:59 arumi loginwindow\[37]: DEAD_PROCESS: 37 console
Oct 12 23:29:59 arumi shutdown\[11554]: halt by \[my user name here]:
Oct 12 23:29:59 arumi shutdown\[11554]: SHUTDOWN_TIME: 1286886599 660576
Oct 12 23:29:59 arumi mDNSResponder\[19]: mDNSResponder mDNSResponder-214.3.2 (May 14 2010 15:29:49) stopping
Oct 12 23:29:59 arumi DirectoryService\[11]: BUG in libdispatch: 10F569 - 1960 - 0x10004004
Oct 12 23:30:00 arumi WindowServer\[67]: hidd died. Reestablishing connection.
Oct 12 23:30:00 arumi WindowServer\[67]: Unable to create event queue via hidd: (0x10000003)
Jan 1 11:00:06 localhost com.apple.launchd\[1]: * launchd\[1] has started up. *
Jan 1 11:00:13 localhost mDNSResponder\[17]: mDNSResponder mDNSResponder-214.3.2 (May 14 2010 15:29:49) starting
Jan 1 11:00:22 localhost bootlog\[48]: BOOT_TIME: 978307205 0
Jan 1 11:00:24 localhost configd\[15]: bootpsessiontransmit: bpf_write(en1) failed: Network is down (50)
Jan 1 11:00:24 localhost configd\[15]: DHCP en1: INIT-REBOOT transmit failed
Jan 1 11:00:24 localhost configd\[15]: network configuration changed.
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Faulty? Return unit to Apple?
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What kind of modem and/or wireless router are you running?
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Note that date/time are usually set automatically via internet, so it seems there could be some connection.
I don't know if any of this has any bearing whatsoever, but I find the timing interesting.
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Message was edited by: tjk

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Hey kelster,
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http://support.apple.com/kb/HT5538
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Hello MacUserNo.1,
Welcome to the Apple Support Communities!
I understand that you are attempting to log into Messages on your Mac but are receiving an error that your Apple ID or password is incorrect. Even though you are sure that they are correct, it may be necessary to change your password to ensure a correct password. Please use the steps in the attached article to complete this process.
If you forgot your Apple ID password - Apple Support
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MacBook Pro messaging reset

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