Software Update, App Store, Terminal, iCal and other Apple Apps will not open.

Question

Hi,
I've exhausted all my search methods and still haven't fixed this issue. I have been disconnected from the internet for about 5 months up until now while continually using my MacBook Pro (early 2011) daily for work. Problems arose about a month and a half ago when I noticed the terminal would not open. I trashed the corresponding plist files as recommended by other websites and trouble tickets. Still no avail, the affected programs all seem to be original software that came with Mavericks. When I try to open any of them (Software Update..., App Store, Terminal, iCal, iTunes Store) nothing happens. The dock makes a space for the icon and then before anything even bounces it quickly closes the space again. I've tried opening the contents of the applications and running the root program directly.
Possibly other relevant information
Ran Repair Disk Permission on the Macintosh HDFound errors on drive and repaired them
iTunes will open, but the store in unresponsive (White screen)
Ran into issues copying files to Macintosh HD from an external USB driveError example "JX879.MXF is in use" and then it would cancel the copy while nothing else was open
At the same time of these issues my internal iSight camera no longer exists according to the system report
Upgrading to Mac OSX 10.94 Mavericks had no affect.
Reset the System Management ControllerHave a recent history of the computer behaving abnormally slow
Any information anyone could give me would be great. Thank you!

Answer 1

Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
The title of the Console window should be All Messages. If it isn't, select
          SYSTEM LOG QUERIES ▹ All Messages
from the log list on the left. If you don't see that list, select
          View ▹ Show Log List
from the menu bar at the top of the screen.Click the Clear Display icon in the toolbar. Then try the action that you're having trouble with again. Select any messages that appear in the Console window. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
The log contains a vast amount of information, almost all of which is irrelevant to solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.
Please don't indiscriminately dump thousands of lines from the log into this discussion.
Please don't post screenshots of log messages—post the text.
Some private information, such as your name, may appear in the log. Anonymize before posting.