Can't open several apps in my Macbook Pro???

For example: App Store, Photo Booth, Calender, ect. What can I do to fix it?

DId the reboot solve it? Someone else may have a better idea, but I'd suggest the following:
Reset the PRAM:
http://support.apple.com/kb/PH14222
Reset the SMC:
http://support.apple.com/kb/ht3964
If those don't work, I'd back everything up then reboot holding down the Command and R keys. That'll take you into the Recovery partition. You should be able to install Mavericks on top of the exisiting installation, though you may have to install the update again. This shouldn't affect your exisiting stuff, but have a backup just in case.

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Can't open contacts app on my macbook

Can't open contacts app on my Macbook. I thought upgrading to Yosemite would fix the problem, it did not. The error message I get when trying to open Contacts:
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid rowCache row is nil'
terminating with uncaught exception of type NSException
abort() called
Any thoughts/solutions?
Thanks,
Alan
computer specs:
Model: MacBook5,1, BootROM MB51.007D.B03, 2 processors, Intel Core 2 Duo, 2.4 GHz, 4 GB, SMC 1.32f8
Graphics: NVIDIA GeForce 9400M, NVIDIA GeForce 9400M, PCI, 256 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334448312D4346382020
Memory Module: BANK 0/DIMM1, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334448312D4346382020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8D), Broadcom BCM43xx 1.0 (5.106.98.100.24)
Bluetooth: Version 4.3.1f2 15015, 3 services, 19 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: TOSHIBA MK2553GSX, 250.06 GB
Serial ATA Device: MATSHITADVD-R UJ-868
USB Device: iPhone
USB Device: Built-in iSight
USB Device: Apple Internal Keyboard / Trackpad
USB Device: IR Receiver
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus:

Can't open contacts app on my Macbook. I thought upgrading to Yosemite would fix the problem, it did not. The error message I get when trying to open Contacts:
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid rowCache row is nil'
terminating with uncaught exception of type NSException
abort() called
Any thoughts/solutions?
Thanks,
Alan
computer specs:
Model: MacBook5,1, BootROM MB51.007D.B03, 2 processors, Intel Core 2 Duo, 2.4 GHz, 4 GB, SMC 1.32f8
Graphics: NVIDIA GeForce 9400M, NVIDIA GeForce 9400M, PCI, 256 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334448312D4346382020
Memory Module: BANK 0/DIMM1, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334448312D4346382020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8D), Broadcom BCM43xx 1.0 (5.106.98.100.24)
Bluetooth: Version 4.3.1f2 15015, 3 services, 19 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: TOSHIBA MK2553GSX, 250.06 GB
Serial ATA Device: MATSHITADVD-R UJ-868
USB Device: iPhone
USB Device: Built-in iSight
USB Device: Apple Internal Keyboard / Trackpad
USB Device: IR Receiver
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus:

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Hi Katherine,
You'll need to save it to a different format to use it on a Mac. If you can still open them on the HP, that would probably be the easiest. Save them as a Mac compatible format such as .mpg. If that doesn't work, here is a converter you can try: http://www.squared5.com/

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Try deleting the App Store cache and cookies...
Quit the App Store first if it's open.
Open the Finder. From the Finder menu bar click Go > Go to Folder
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Hi Katherine,
You'll need to save it to a different format to use it on a Mac. If you can still open them on the HP, that would probably be the easiest. Save them as a Mac compatible format such as .mpg. If that doesn't work, here is a converter you can try: http://www.squared5.com/

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Noura-alb,
We've an article that can help restore your Mac's ability to connect to the App Store so that you may update your game successfully.
OS X: "Cannot connect" or "Cannot connect to the App Store. An internet connection is required"
http://support.apple.com/en-us/HT203811
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Hi russraman,
I've been having that issue off and on lately, but I'm certain it's my cable provider and not my Mac. You probably see the Wifi indicator with an "!" in the middle of it? It means that the Wifi was able to get onto the network, but not to make an internet connection because of a bad IP address.
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Slow boot up after that Can't "OPEN" any Applications on my Macbook pro.

Hi
well, when I got home from school I always get on "Safari" first to check mail, youtube, facebook ... youknow but Last night what happen was like my Safari was crash and I click ok not a re-open one but when I click on Safari again it's starting crash again then I reboot it and when it start boot up I feel that It's getting slower than before on boot up it took about 5 minutes to get on which is actually less than 20 secounds.. now when it's fully start up it show my desktop then I click on Safari or anyprogram it's not even pop up or bouncing and when I click on "Finder Icon" it's said "can't open Applications - 10810" then I tried to reserch on google and they said to reboot it and I tried over and over again it won't work..
Help!
Thanks

Hard to say what's going on here. Open Disk Utility and check to see if SMART is verified. Also verify the disk. If problems are found, boot from your install disc and repair your boot disk.
One possibility is that your hard drive might be starting to fail. If you don't already have a good backup of your data, be sure and make one just in case. If the hard drive is failing, it will need to be replaced.
Another possibility is that the OS has become corrupted. If so, you will need to reinstall it. However, check out the hard drive first--if it's failing, it won't do any good to reinstall the OS, and you may not even be able to. Better to rescue your data first.
Good luck!

Can't open several apps in my Macbook Pro???

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