Q: iMovie keeps quitting. If I uninstall will it affect iPhoto?

no, it will not affect your iphoto. However, I suggest if you want to keep using iMovie, maybe do something about that. run disk utility, check on the Smart status of your Hard drive, then maybe verify and repair disk permissions.  You haven't told us much, so we can't help you much. Please, if you want to post a question here, tell us what OS you have at  least, and...post in the correct forum, susi9. This is a very common mistake -MacBook Pro does not mean Mac Pro. If you still need help with iMovie, remember that it loves Ram, so update your Ram if you can..

JB

iMovie

http://www.apple.com/support/imovie

https://discussions.apple.com/community/ilife/imovie?view=discussions

Direct you to the proper forum for MacBook :

MacBook Series Forums

https://discussions.apple.com/community/notebooks?view=discussions

Applications do not affect data or preferences.

But it sounds like the restore of your new hard drive brought along problems and errors from before, when the old drive "died" it probably just needed software repair and maintenance unless the drive's structure, the sectors that data reside on, had a few bad or weak sector blocks.

What are you doing for backups? maintenance? Mountain Lion Recovery for instance?

You need to start addressing the WHY and repair the disk drive directory, and the best medicine is not that bad or hard: backups, a clean install (save the Mountain Lion installer to flash drive), and then import using Setup Assistant.

And keep more than one backup set - so you have a 2nd set off line at any time.

Clone. Carbon Copy Cloner makes an exact bootable copy of partitions and under advanced setting, will do a checksum of each and every file to insure its integrity.

It is unlikely uninstall of the app is the issue. As long as everything is current, compatible, and you didn't install or keep older programs and 3rd party extensions and utilties interferring with Mac behavior and STABILTY.

Using Cloning as a Backup Strategy

http://www.macupdate.com/app/mac/7032/carbon-copy-cloner

Recovery Mode

http://support.apple.com/kb/HT4718

http://www.apple.com/support/lion/installrecovery/

TimeMachine 101

https://support.apple.com/kb/HT1427

Mac OS X Help

http://www.apple.com/support/macbasics/

Isolating Issues in Mac OS

http://support.apple.com/kb/TS1388

https://www.apple.com/support/osx/

https://www.apple.com/support/quickassist/

http://www.apple.com/support/mac101/help/

http://www.apple.com/support/mac101/tour/

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General purpose Mac troubleshooting guide:

Isolating issues in Mac OS X

Creating a temporary user to isolate user-specific problems:

Isolating an issue by using another user account

Identifying resource hogs and other tips:

Using Activity Monitor to read System Memory and determine how much RAM is being used

Starting the computer in "safe mode":

Mac OS X: What is Safe Boot, Safe Mode?

To identify potential hardware problems:

Apple Hardware Test

General Mac maintenance:

Tips to keep your Mac in top form