1. Error Code 1000

    Cause: iTunes cannot be launched.

    Solution: Please manually close M4VGear and iTunes, then try to relaunch the program.

Currently the program doesn't support macOS 10.13 High Sierra or above. Here are two solutions for you:

1) Recommended - We advise you to try our Windows version. If it works well for you, we can help switch the program from Mac version to Windows version, for free. Please contact us at support[at]m4vgear.com (replace [at] with @ before sending e-mails).

2) Install and run OS X 10.12 or 10.11 on an external hard drive

3) Revert your macOS to 10.12, which is fully supported by M4VGear for Mac.

2. Error Code 1001 and 1002

    1) Cause: The file is unauthorized.

        Solution: Please authorize the file in iTunes and relaunch iTunes and the program successively.

    2) Cause: Several versions exist for the file. And the version added for converting is different from that set in iTunes -> Preferences -> Playback -> Preferred Video Version.

        Solution: Reset Preferred Video Version in iTunes -> Preferences -> Playback -> Preferred Video Version. Then play the video from the beginning with iTunes. After that, relaunch iTunes and the program successively.

    3) Cause: The file is from external drive or Internet shares. External drive or Internet has been disconnected after the files was added to the program for converting.

        Solution: Please make sure that external drive or Internet is connected to computer while converting.

    4) Cause: The rentals cannot be played with iTunes

        Solution: Choose Play when iTunes is asking you if you want to play the file or not after you click Convert button.

        If problem persists, please try to manually play the iTunes video in iTunes at once after clicking Convert button to start conversion with M4VGear.

3. Error Code 1003

    Cause: The file is from external drive or Internet shares. External drive or Internet has been disconnected after the file was added to the program for converting.

    Solution:Please make sure that external drive or Internet is connected to computer while converting.

4. Error Code 1004

    Cause: Error occurs while converting a certain track.

    Solution: Relaunch iTunes and the program. After the file is added to the program, convert directly without doing any settings on Audio/Subtitle Track.

5. Error Code 1006

    Cause: Error occurs while converting the file.

    Solution: Close other running programs and relaunch iTunes and the program to restart the conversion.

Note:

If the above solutions cannot fix your problems, please provide the below information to our support team support@m4vgear.com. We will submit your feedback to our developer and inform you if the solution is available.

For Mac Users:

• Your version of M4VGear Converter for Mac.
• Your Mac OS and model of Mac computer.
• Version of your iTunes.
• Can you play the video in iTunes normally?
• Are you converting iTunes purchased or rented movie? SD or HD?
• Did it happen to all movies or a certain movie? If possible, please provide us with the name of the movie.
• Which output format did you choose? We suggest you choose other output format for a try.
• Please send us two log files of M4VGear. You can find them by clicking "Menu>File>Show Log in Finder". They are movie_convert.log and m4vgear.log.

For Windows Users:

• Your version of M4VGear Converter for Windows.
• Your Windows OS.
• Version of your iTunes.
• Can you play the video in iTunes normally?
• Are you converting iTunes purchased or rented movie? SD or HD?
• Did it happen to all movies or a certain movie? If possible, please provide us with the name of the movie.
• Which output format did you choose? We suggest you choose "Lossless MP4" as output format for a try.
• Please send us the log file of M4VGear. Just find the menu button on the upper right corner and click on "Locate Log File",  A window which contains the log file would pop up. It's "iTunes.log".