Unfortunately, this meant the tests had to be run under a more current OS, like El Capitan, but I wasn't willing to update the Mac Mini without preliminary testing. It is still running under Lion and Server v1.5.0 app and I wanted to check out the latest Server v5.1.7 app. Last weekend I wanted to run some tests on my Mac Mini Server. After reading your response, I decided to run a quick check of a drive on which I recently installed El Capitan. If I install Quicktime 7.6, movies also played well without errors except the Quicktime in El Capitan which consistently shows error (-101) Also during all the process, the quicktime works properly except installing straight to El Capitan from App Store. Installed 10.10 Yosemite and upgraded to El Capitan, no good then finally got a 10.10.1 El Capitan usb, and upgraded to 10.10.6. Reinstalled 10.9 Mavericks and upgraded to El Capitan, no good. Installed 10.7.5 then upgraded to El Capitan, no good again. Installed 10.6, then upgraded to El Capitan, but no good. I finally got the quicktime working but it was a very long trial and error process. I would normally try playing the files on a different system and/or playing the files in an app like VLC to determine if the problem is with the files themselves or the new operating system, QT structures embedded in the OS or the player app. If you upgraded the Mac OS from a post-Mavericks version and are suddenly having problems with the files, then the issue may be either one one of the recent security updates that doesn't like files created by your Canon digital camera (even though there is nothing wrong with the data) or you may have a bad/corrupted installation of the new operating system.

If you upgraded from a pre-Mavericks version of Mac OS X, then knowing the file container format and codecs used to create the files on your camera might be significant.

More information or a sample file would be useful here. I dont know what to do next since I need those files to view for editing.Įrror code -101 appears to be associated with the scrap heap manager. Kept showing 'the document can not be opened, An unknown error occurred (-101). I just installed El Capitan and suddenly I cant view any movies shot with my canon digital camera.

Quicktime player for mac 10.11.6