Can’t see some preinstalled Apps

If there are Apps that are supposed to be included in the ROM but do not show up.

Try clearing the Launcher data, there are two ways to do this
BEWARE this will reset all your desktops back to the default so backup your desktop first
Backup > System > Backup > Tick Desktop Layout (or Select All for safety) > Start Backup
1. Using Titanium
  Titanium > [DESKTOP] Launcher 2.2.1 > Wipe data. This will reset your desktop.
2. Using Settings
  Settings > Applications > Manage Applications > All > Scroll down to Launcher > Clear Data
3. After you get your desktop back how you want it:
  Titanium > [DESKTOP] Launcher 2.2.1 > Backup or
  Backup > System > Backup > Tick Desktop Layout (or Select All for safety) > Start Backup
If the above does not work, try a full wipe, this will set your phone back to factory settings.
1. Reboot your phone into ClockWork Mod recovery
2. Select “wipe data/factory reset”
3. Select “advanced” then “wipe dalvik cache”
4. Go back to the main menu by using the BACK button on your phone and reboot