Can't Download Quicktime

[Mr. Incredible]

I was having an issue with Quicktime yesterday, I noticed it when it wasn't playing any videos from apple trailers.

So, I went to redownload it from the apple website, but during the process, it said that I already have it on my desktop.

After deleting Quicktime, I'm trying to redownload it, and it's still giving me this error.

What am I doing wrong?

 

[jackerin]

Try this http://support.apple.com/kb/dl923

 

[JediMeister]

If you did actually delete QuickTime X, the only way to bring it back properly is to reinstall Snow Leopard...
If things are still broken afterward, you may want to take a look at the contents of /Library/QuickTime, and seeing what non-Apple codecs you have loaded in there. Dragging select items to the Desktop and restarting the Mac will refresh the plug-ins in use and allow you to determine if one of those plug-ins was causing your issue with video playback.

 

[upinflames900]

I believe that you can install quicktime 7 using the install disk and then update it online. Don't quote me on that though.

 

[JediMeister]

I believe that you can install quicktime 7 using the install disk and then update it online. Don't quote me on that though.

You're right about that, instructions here.

 

[Mr. Incredible]

So, I'm trying to watch a trailer from Apple Movie Trailers, but I keep getting this error.

Also, when looking in the Library section, I don't see a quicktime, but I am curious as to why my Stickies, looks like the way it is.

Also, I'm running Snow Leopard 10.6.6, and if I do have to reinstall it, will I lose any of my music/movie/photo/app content?

Finally, something completely out of topic, but it feels that my iMac is somewhat a bit slower then what it was a few months ago when I first bought it. Is there a way to find out why it's moving this slow? And, is there a way to find out how old your iMac is? Like, the exact date that you bought it? I don't think I have my receipt anymore, it's been well over 6 months...

 

[Mr. Incredible]

I have two disks with me:

iMac: Applications Install DVD
&
iMac: Mac OS X Install DVD

^Are any of these helpful for me in my situation?