When trying to Export Movie, I get an error saying Unable to prepare project for publishing. Can anyone help?

I have been trying to Export a 48 minute movie (stills, titles, transitions, and background music using iMovie 11 Ver 9. After a couple of hours of rendering, it stops with th efollowing error: "Unable to prepare project for publishing. The project could not be prepared for publishing because an error occured. (File already open with with write permission)". Can anyone help? Thanks.

I'd start with the following user tip with that one:
"There is a problem with this Windows Installer package ..." error messages when installing iTunes for Windows

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    Thanks!!! I had same error (with -49) and the mac had an external hard drive attached.. and it was doing a backup.  Stopped, disconnected and the project exported!

  • Will not share Imovie with Idvd. Gets so far and then a box saying Unable  to prepare project for publishing because an error occured (-41)

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    this error occurs. Unable to prepare project for publishing. The project could not be prepared for publishing because an error occured. (Project is too Long)
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    Hi
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    Trash the preference files while application is NOT Running.
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    Some users notice on exporting larger projects from within iMovie that this operation is aborted with an 'error -49'
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    try switching-off the Local Mobile Backup
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    Hi
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  • I keep getting the following error message while sharing my iMovie to iDVD.  "Unable to prepare project for publishing"  error (-2125).

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    I keep getting this message from Imovie:
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    Bartirn,
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    In iMovie I am getting this message...Unable to prepare project for publishing.  The project could not be prepared for publishing because an error occurred. File already open with write permission. 
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    Hi
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    Yours Bengt W

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    The project could not be prepared for publishing because an error occurred. (-50)

    Hi
    Error -50 paramErr  Error in user parameter list
    Can there be any external hard disks - if so How is/are it/they formatted ? Must be Mac OS Extended (hfs) if used for Video.
    UNIX/DOS/FAT32/Mac OS Exchange - works for most but not for VIDEO.
    What this means in Your situation is above me.
    • free space on internal boot hard disk? How much ?
    Video codec
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    Pictures
    • in what format ? .jpg, .bmp, .tif, else ?
    Audio
    • from where/what format ? iTunes, .avi, .mp3, .aiff, else ?
    The "com.apple.iMovie.plist" file
    Many users has not observed that there are TWO libraries.
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    from Luke Burns
    I fixed the problem.. but it was very, very strange. I had a very long section for credits and set the line spacing to 1.0.. for some reason this caused it. I removed it, and it worked fine. I put it back, and I couldn't preview or play the video.
    I don't know why that could cause that big of a problem, but it did..
    Klaus1
    You need more free space on your hard drive.
    jonorparkerjon
    After phone support from apple I ended up creating a new project and adding all 117 clips back in individually till I found out what clips flagged and would not allow me to export. I had 3 I deleted and replaced and everything works now 1hr after tedious work....
    Where do Your material come from
    • Camera
    • External hard disk
    • USB-memory
    And all are connected so that iMovie can find it ?
    Yours Bengt W

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