How come my computer cannot connect with my camcorder?

I don’t know, but maybe this will help:

1. Navigate to Library -> Receipts on your main drive (not from your personal folder).
2. Remove all files of the form QuickTime*.pkg, where "*" is a version number. E.g. QuickTime600.pkg, QuickTime650.pkg, Quicktime700.pkg and QuickTime701.pkg. This simply tells your system that those packages are not installed.
3. Go to http://www.apple.com/quicktime/downloads and click on the "download Quicktime" link. DO NOT USE THE AUTOMATIC UPDATE UTILITY. Download QuickTimeInstallerX.dmg. Double click this file (probably on your desktop) and then invoke the installer by double clicking QuickTime701.pkg.
4. After your computer reboots, you should be able to restart FCP or FCE and see your camera.