HT204382 My Mac will not open some movies

My Mac will not open some movies from my emails.

http://perian.org (adds support for older codecs).
http://www.telestream.net/flip4mac/overview.htm (adds support for Windows Media Player formats).
Both are free.

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    I installed safari 8.0.1 and now my mac is really really slow and will not open some pages. Can I uninstall?

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    Quit and relaunch the browser. Any change?
    Enable guest logins* and log in as Guest. Don't use the Safari-only “Guest User” login created by “Find My Mac.”
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  • My mac will not open this specific website.

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    If your profile is correct and your Mac is running v10.6.7, updating your systemn software may help.
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    Some pdf files from the web will not open, some will. I am using Adobe Reader 10.0.1 on an 8-year old puter I have just upgraded to 2G of RAM. It worked fine before with 256K. When a file won't open I get error message "There is a problem with Adobe Acrobat/Reader. If it is running, please exit and try again (103:103). Have uninstalled and reinstalled all Adobe products several times. Ideas?

    Good luck with that. Adobe10.0.1 is a bug infested BAD program. Look at the posts relating to this issue for the last 3 days. Many, many problems. Support is no help.

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    Since you're running Lion, just try a new system install - it won't affect your data or apps, but you should, anyway, have a backup regardless.
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  • My AI program (CS5 Illustrator 15.1.0) will not open some PDFs. It was working just yesterday, but now will only open a PDF if the graphics of the PDF is visible in the box that appears in the lower left corner of the dialog box after you click Open. The

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    Hello Kathie,
    Sorry for the inconvenience that has caused to you.
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  • FCPX will not open after move to a new Mac'

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    Hello Tom, thanks for the very swift response!
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    This can be a real pain in the butt. You best read this, figure out what you did wrong, and don't do it again. Hows that for compatibility eh?
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  • Mac will not open iCloud "Documents" - No Errors

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    I am not sure why this works, but it worked for me.
    The behavior I am experiencing happens when I open Numbers for the first time, I am prompted with the open dialog box.  If I attempt to open a file from my icloud in that dialog, I am unable to open any document, i.e. this is the behavior I am experiencing.
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  • Photoshop CS5 will not open some tiff files

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    Thank you all for your help.
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  • Photoshop will not open some of my files

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