I cant play flv and avi format after upgrade to Mountain Lion

I've updated to Mountain Lion on my Macbook Pro and now I cant play any movies with format flv and avi ??? am I missing something here, keep getting errors from Apple Quicktime, thanks

I would recommend that you download and install the excellent Free player, VLC:
http://vlc-media-player.en.softonic.com/mac

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Why has my Safari and MAIL slowed after upgrading to Mountain Lion on my MacBookPro ?

Why has my Safari and MAIL slowed after upgrading to Mountain Lion ? I have mid-2009 MBPro and have very fast Internet access router.

I have noticed the same thing on my MAC. Mail has become very "clunky"- Before Mountain Lion, whenever I clicked on a msg or a function (delete), it would respond immediately. With Mountain Lion there is an unacceptable hesitation. What is going on with this latest update?

Mail problems, slow browsing and Facebook problems after upgrading to Mountain Lion

Hi !
I have a 27” iMac from late 2009 which started acting really strange after upgrading to Mountain Lion.
Before that everything works fine but now Mail does not work, will not send replies or add attachments and browsing has become so slow that it usually times out. Another strange problem is Facebook messages which does not work at all (cannot read nor send(.
I have Lenovo laptop connected to the same network so I can benchmark and browsing works just fine on that aswell as FB messages.
Anybody got a solution to this other than using the iMac for offline use only ?

Hi !
I booted both the modem and router but it did not help. Then I tried using the iMac on wireless and now it works so must be something in my D-Link router.
Thanks for pointing me to the right direction !

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I booted both the modem and router but it did not help. Then I tried using the iMac on wireless and now it works so must be something in my D-Link router.
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After upgrading to mountain lion, i cannot play any video at all, be it directly off a DVD, or through streaming like youtube, BBC iplayer or even off my iTunes library

after upgrading to mountain lion, i cannot play any video at all, be it directly off a DVD, or through streaming like youtube, BBC iplayer, love film or even directly off my iTunes library. in each case, all i get is a black screen and no error message.

Hi, i had the same problem and tried this,
Somehow iTunes is tied to Safari. Try this:
Someone mentioned to clear all website data and history in safari, stupid but it was either this or the below that fixed it
or this,
Disable Wi-Fi Networking Services
Many users have reported that they’ve solved their issues by disabling Wi-Fi Networking under Settings > Privacy > Location Services > System Services. This only relates to your location being used for Wi-Fi Networking, so it doesn’t disable Wi-Fi entirely.
Please let me know if it works.

ITunes movie playback, audio and video not in sync after upgrade to Mountain Lion

After upgrading to Mountain Lion I have problems with iTunes movie playback, and the audio/video at times stalls/delays, or skips a few seconds, or even gets out of sync. I feared this problem was isolated to my machine until I saw an article online: http://reviews.cnet.com/8301-13727_7-57489874-263/sound-stuttering-after-mountai n-lion-installation/. I have 2011 iMac 27" with 16G RAM and am running the latest iTunes and Mac OS X software, and shutting down extra programs doesn't help. Please let me know of any solution.

I also have this problem, and some videos will no longer play in iTunes.
I get a message that this video is not compatible with this version of iTunes. I have to open the video in Quicktime to watch it.
Unacceptable! This hardware and software is too expensive to have these performance issues.
2011 Mac Mini, 8GB RAM, Duo core, iTunes library on NAS on wired network. Mountain Lion 10.8.2. iTunes 10.7 64 bit.

After upgrading to Mountain Lion, I repurchased Garageband and I can't get passed the complete installation. I don't seem to have the "com.apple.garageband.plist" file that has been a common solution. Any suggestions?

After upgrading to Mountain Lion, I repurchased Garageband and I can't get passed the complete installation. I've read through several posts that all reference the "com.apple.garageband.plist" solution. I don't seem to have the referenced .plist. Any solutions or suggestions?

Did you upgrade from SnowLeopard?
I can't get passed the complete installation
What exactly is happening? Is GarageBand trying to download over and over again?
all reference the "com.apple.garageband.plist" solution. I don't seem to have the referenced .plist.
The property list stores your preferences, but also the settings from the last run of the application. If that file is corrupted in some way, you might see third behaviour.
You must have this file, for it will be recreated automatically, if it is missing, or you have a permissions problem with your user library.
Perhaps you did look in he wrong place.
in MacOS 10.7. or later the User Library is hidden. To find the Preferences Files use the Finder's "Go" menu:
Quit GarageBand, if it is running.
Click onto you Desktop to bring the Finder forward.
In the Finder Menu press "Go" and hold down the "option/alt" key, until your user library appears in the drop-down menu
Select "Library" and in the Finder window that opens navigate to the "Prederences" folder; move com.apple.garageband.plist to the Desktop.
Log off and on again (don't skip that step!). Retry GarageBand and see if it GarageBand is now downloading the missing content properly.
If that does not fix the problem, post back and explain in more detail what the download problem is.
Why did you "repurchase" GarageBand? If you already owned GarageBand '11, it should be unnecessary.
Regards
Léonie

After upgrading to Mountain Lion from Lion, Mail, Safari and note need about five minutes to start.

After upgrading to Mountain Lion from Lion, Mail, Safari and Note need about five minutes to start.
After starting, Mail answers are very very slow. The same for Note. Instead of, sending mails is only a bit slower than before upgrading.
In Safari, I choose Goggle as starting page in Preferences, but at every restart misses that starting page and the search strip says "Seek Google or instert an address".

Well, I found the solution here in another thread.
i just want to mention that the samw thing was happening also for the notes and the reminders apps!! (they quit unexpectedly!!).
So I found the solution here.
Thank you graphicsluc!!!

After upgrading to mountain lion i keep getting an error message saying my startup disc is full. it shouldnt be full because there is barely anything on there and i was running windows with bootcamp prior to this with no issues

after upgrading to mountain lion i keep getting an error message saying my startup disc is full. it shouldnt be full because there is barely anything on there and i was running windows with bootcamp prior to this with no issues. my computer now freezes and programs close randomly. The usual command for opening windows with bootcamp doesnt work. once in restarted my computer after it froze and it rebooted in windows automatically. i really just want to know if there is a way to take the upgrade off my laptop because it is very annoying.

Hi Memalyn
Essentially, the bare issue is that you have a 500GB hard drive with only 10GB free. That is not sufficient to run the system properly. The two options you have are to move/remove files to another location, or to install a larger hard drive (eg 2TB). Drive space has nothing to do with SMC firmware, and usually large media files are to blame.
My first recommendation is this: download and run the free OmniDiskSweeper. This will identify the exact size of all your folders - you can drill down into the subfolders and figure out where your largest culprits are. For example, you might find that your Pictures folder contains both an iPhoto Library and copies that you've brought in from a camera but are outside the iPhoto Library structure. Or perhaps you have a lot of purchased video content in iTunes.
If you find files that you KNOW you do not need, you can delete them. Don't delete them just because you have a backup, since if the backup fails, you will lose all your copies.
Don't worry about "cleaners" for now - they don't save much space and can actually cause problems. Deal with the large file situation first and see how you get on.
Let us know what you find out, and if you manage to get your space back.
Matt

After upgrading to mountain lion, the movies I create using iDVD periodically stop then resume abruptly when I play them back on my DVD player. Any ideas on correcting this?

After upgrading to mountain lion, the movies/slideshows I create using iDVD playback in a jolting start/stop manner. This didn't happen with the prior os - playbacks were flawless. Any ideas, short of uninstalling mountain lion, on how to correct?

I know this is not much help. IDVD and Mountain Lion are working perfectly for me. I know many others that use Mountain Lion with iDVD also.
I think your problem lies elsewhere.

After upgrading to Mountain Lion I am not able to access "security and privacy" button under "system preferences". I like to activate "find my mac" but cannot access privacy setting after upgrade. Kindly advice.

After upgrading to Mountain Lion I am not able to access "security and privacy" button under "system preferences". I like to activate "find my mac" but cannot access privacy setting after upgrade. Kindly advice.

After upgrading to mountain lion I cannot use my HD TV as a display through my thunder port and HDMI cable ???

after upgrading to mountain lion I cannot use my HD TV as a display anymore using thunderport and HDMI , which worked before , does this mean I have to buy apple tv to mirror onto my HD TV

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After upgrading to mountain lion, i find that my mail app does not have a "VIP" Tab. Was wondering if anyone else has this issue and what it is about?

after upgrading to mountain lion, i find that my mail app does not have a "VIP" Tab. Was wondering if anyone else has this issue and what it is about?

First, select sender(s) as VIPs. Then the VIP category will appear.
To select a sender as a VIP, open an email from that sender, then hover over their name and a star icon will appear to the left. Click the star, and that sender will be set as a VIP (and the category will appear in the pane on the left).

After upgrading to Mountain Lion it's not possible to play videos in Fullscreen Mode

Hello everyone,
after upgrading to Mountain Lion on my iMac (27 inch, Mid 2011) I got the problem, that every video or movie in full-screen mode jiggles after a while. I'm using my Mac as a TV with Elgato EyeTV - and usualy I use it in full-screen mode.
A complete new installation from scratch didn't solve my problem.
If the problem occurs, the processor idles ans the hard-disk activity is low.
Is there anybody out there, who can help me?
Regards,
Stephan

If the issue only occurs when watching TV (using Elgato) then it's an issue on their side. Try a browser window and if can view the browser in full screen mode then that proves the point. You can also create another user account, log into that account and see if the issue is still there. If it disappears then you have an issue in your normal user account that needs to be tracked down. If the issue persists then your issue is global.

I cant play flv and avi format after upgrade to Mountain Lion

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