Many problems after data migration

Question

I recently installed an SSD on my Early 2011 MBP. I put my old drive in an enclosure and after installing Mavericks 10.9.4 on the new drive, I used Migration Assistant to copy over all my Users/Applications etc. Many problems ensued. One of the users migrated without any (major) problems. The other user had the following issues:
1) Every time I log in, several programs automatically open (Word, Powerpoint, Messages, Preview, Firefox). Even if I quit them all, log out and/or reset, then log back in, they all open back up again. This didn't happen before. None of these programs are in Users & Groups --> Login Items.
2) iCould, Facetime and Messages all ask my for me AppleID password, every time I log in. Facetime even asks for the password twice (I put it in correctly. If I put it in incorrectly it lets me know). It does this every time I log in.
3) Facetime and iMessage won't connect to the network. However, if I make a new user and sign in to Messages it works, so I know the network is fine.
4) Every time I start Firefox, it opens to the "recovery" page. I can delete the profile information, and it gets rid of this problem, but then I have no history/saved passwords etc. and that defeats the purpose of having my information migrated over.
I've googled the above issues and tried all the solutions I could find but nothing works. I'm fairly computer literate but this is causing me to pull my hair out! Any help would be appreciated. Thanks.

Answer 1

I resolved the problems above by using Linc Davis' post on Nov 23, 2013 11:44 AM on this thread: Could not sign in to iMessage.
Details copied again below
Back up all data. Don't continue unless you're sure you can restore from a backup, even if you're unable to log in.
This procedure will unlock all your user files (not system files) and reset their ownership and access-control lists to the default. If you've set special values for those attributes on any of your files, they will be reverted. In that case, either stop here, or be prepared to recreate the settings if necessary. Do so only after verifying that those settings didn't cause the problem. If none of this is meaningful to you, you don't need to worry about it.
Step 1
If you have more than one user account, and the one in question is not an administrator account, then temporarily promote it to administrator status in the Users & Groups preference pane. To do that, unlock the preference pane using the credentials of an administrator, check the box marked Allow user to administer this computer, then reboot. You can demote the problem account back to standard status when this step has been completed.
Enter the following command in the Terminal window in the same way as before (triple-click, copy, and paste):
{ sudo chflags -R nouchg,nouappnd ~ $TMPDIR.. ; sudo chown -R $UID:staff ~ $_ ; sudo chmod -R u+rwX ~ $_ ; chmod -R -N ~ $_ ; } 2> /dev/null
This time you'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning to be careful. If you don’t have a login password, you’ll need to set one before you can run the command. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.
The command will take a noticeable amount of time to run. Wait for a new line ending in a dollar sign (“$”) to appear, then quit Terminal.