Extension error with freepbx when I update asterisk from 1.4 to 1.6

Hi
Yesterday, I update the asterisk 1.4.31 to 1.6.8 I did backup of /etc/asterisk and /usr/lib/asterisk/modules and I stop the asterisk.
Then I download:
wget http://downloads.asterisk.org/pub/asterisk/asterisk-1.6.0-current.tar.gz
wget http://downloads.asterisk.org/pub/asterisk/asterisk-addons-1.6.0.tar.gz
and spandsp
wget http://www.soft-switch.org/downloads/spandsp/spandsp-0.0.5.tgz

then I did
tar - xf spandsp-0.0.5.tgz

then I went into the directory and compiled
cd spandsp-0.0.5
./configure --prefix=/usr
make
make install
ldconfig -v

then I compiled asterisk and addon

  1. cd /usr/src/asterisk-1.6.0.13
    ./configure
    make menuselect
    make
    make install
    make samples
    make config
  2. cd /usr/src/asterisk-addons-1.6.0
    ./configure
    make menuselect
    make
    make install
    make samples

After that I copied one more time the old directory but when I restart the server I loging I can’t see the extension information. The extension was in blank. The other menus is ok.
What can I do?