Compressor 2.0.1 "error trying to open source media file"

I am getting the same error message. I am using compressor 1.2.1. and this is the first time I have used it. I never used it before updating to Quicktime 7.4 so I am not sure if this is the problem for me, but am suspecting it might be

Only option left is to do a complete wipe of my hard drive and reinstall everything. I have done the complete uninstall of compression (article #302845), reinstalled compressor but its still wasn't working with Quicktime 7.3.1 Pro, so upgraded to Quicktime 7.4 Pro and still no luck. I then turned off my firewall and it worked, BUT only one time. Now I am getting the same "error trying to open source media file" whenever trying to import a file into Compressor.

I also receive a "Failed: quicktime error -50" in the Batch Monitor's history window when I use compressor from Final Cut Pro HD 4.5 and hit submit.

When I went to empty the trash before reinstalling Compression I was denied with messages stating "qmasterd in use" "AE Core in use" "Swampcore in use", even though these were not being shown in the activity monitor nor were the files found when searched for in Finder.

Hopefully a complete wiping of my HD will solve this. Don't have the time to find out right now.

Well your not alone. It did the same thing yesterday. That will be the last time I do QT upgrade. I'v removed and reinstalled Compressor and Qmaster twice, and still get the same ALERT "error trying to open source media file"
I hope someone has an answer !!

I'm getting the same message. It just started today. I've used Compressor many times before and now this error is suddenly popping up. I've tried several different videos to import and it gives me the same message on each of them as well as when I close the program. Can someone please help us...I have to get a video compressed to send to a client TODAY.

Getting PO'ed. I have tried everything except a complete wipe of my computer. I reinstalled Mac OSX, Final Cut, DVD Studio Pro, Motion, and did software updates and I still get this "error trying to open source media file". ***! I am blaming quicktime.

W T F

Same problem for me - had to use a friends Squeeze instead - come on Apple fix it pronto.

It seems QT 7.4 messes loads of A/V apps up - the solution is to revert to 7.3 using an alternative installer called Pacifist.
See this other thread: http://discussions.apple.com/thread.jspa?threadID=1342677&start=30&tstart=0
Get Pacifist at: http://www.charlessoft.com/
and the QT 7.3.1 download at: http://www.apple.com/support/downloads/

Open the 7.3.1 package with Pacifist and after its done all its checking and extracting it will ask if you want to Replace the existing application - answer Yes.
It retained my Pro pro apps auto registration.

I'm having the same problem as well. Is the only solution to reinstall an older quicktime?

It's either that or wait for a patch that will probably never come, I'm afraid.

Sorry to squeeze in here, but I get the other error message: Unable to connect to background process
I never had that in 10.4, but in 10.5.1 I do. Compressor2.0.1; opens, import files, and can save settings, but going from FCP5.0.4 sequence to Compressor2.0.1 does not open at all. All other options using Quick Time work.

I even wiped and installed Tiger 10.4.11, and everything worked. Upgraded to 10.5.1, no love, same error. I did what the article says, wipe compressor and qmaster, and did the long version. still no love.
I even used Pacifist for installing Final Cut Studio 1.

I will try the install of QT7.3, then report back...

Thanks for the help...it definitely was having the newest version of QuickTime...it also messed up FCP Pro 4.5 for me as well. Apple really needs to take that version off quickly before it creates massive problems for people! Again...thanks yall!

F - Didn't work for me. Still getting error trying to open media file message, even with QT 7.3.1