OS X Technologies :: What Does "system Extension Cannot Be Used" Mean
Apr 11, 2012
The system extension /System/Library/Extensions/SyncRAIDExpander.kext was installed improperly and cannot be used. try reinstalling it, or contact the products vendor for an update. what does this mean?
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Apr 6, 2012
I have a set of photos I"d like to import into iPhoto, but iPhoto doesn't recognize them because they don't have file extensions. Could someone give me a script that will look at each file in a specific folder, check to see if an extension is present, and if not, add the correct extension based on the file type?
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Aug 31, 2009
I get this every time I boot.
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Jun 13, 2012
I just installed a number of software updates - iTunes, iPhoto, iMovie, etc. - and this message came up: System extension cannot be used The system extension "/System/Library/Extensions/Iomega/SAM.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.
Info:
iMac, Mac OS X (10.7.2)
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Sep 9, 2014
I responded to the upgrade of iTunes today - to version 11.4. I did this in short succession on a Macbook Pro and iMac, both running Mavericks. On both machines I got an error message immediately after the upgrade as per the attached image...
Info:
MacBook Pro, OS X Mavericks (10.9.4), iTunes upgrade - 11.4
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Apr 6, 2012
I have a problem with Norton AntiVirus and have spent hours on-line with three levels of Norton Engineeers. Norton will not perform an idle-scan and loses its license on restart, requiring re-entry of the product key.
When removing Norton files for a re-install an alert pops up System extension cannot be used The system extension "/System/Library/Extensions/SymInternetSecurity.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update. As noted, I have spent many hours on the phone and LiveChat with Norton engineers. The last one has suggested I contact Apple Support for assistance. They will call back on Monday. I am running a 15" MacBook Pro (Early-2011), 2.3 GHz Intel i7, 8 GB 1333 MHz DDR3, OS X Lion 10.7.3, 512 GB Solid State SATA (Crucial)
Info:
MacBook Pro (15-inch Early 2011), Mac OS X (10.7.3), 2.3 GHz Intel i7, 8GB 1333 MHz DDR3
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Sep 10, 2014
Installing latest version of iTunes (11.4) today led to the following error message: System extension cannot be usedThe system extension “//System/ Library/ Extensions/AppleUSBEthernetHost.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.
I'm able to use my USB drive for Time Machine, and that appears to be functioning ok. And what does it mean for the continued safe operation of my MacBook?(Other than the distraction of getting a worrying error message that I take time out to report?)
Info:
MacBook Pro, OS X Mavericks (10.9.4)
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Sep 11, 2009
That's the message I got when adding a new printer driver. The reference was system/library/extension/cnqe202-classicnotseize.kext. Or close to that. I think I got that message also when upgrading to 10.6.1. As I recall there was also a note about updating this extension but no info on how to do it. Searching for .kext brought up a long list from last August having to do with crash reports with skype, real player, fire fox and a couple more; but nothing permanent and everything is working fine. Anyone have any thoughts about this? I'm using an iMac, 20".
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Jan 1, 2011
Keep getting "System extension was not installed properly" message at start up after attempting to instal upgrade osx (snow leopard 10.6) right now I have osx 10.5. How do I repair it. Can I use SL 10.6 on a 2006 IMac?
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Jun 13, 2012
every time i have an update this will promt out, but the update still cary one sucesslly. do i need to do some thing with it our still ignore it? or do what it says? How to? The system extension “/System/Library/Extensions/WkClassicNotSeizeDriver.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
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Nov 24, 2009
I have updated HP drivers twice through Apple's Software Update and each time I get the following error: After dismissing the message I get a confirmation that the update was successful.
MacBook Pro
Snowleopard 10.6.2
2.16 Ghz Intel Core 2 Duo
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Sep 25, 2010
As I understand it the MDP from the 5770/5870's have audio support. So does the cable from the new 27" LED display. Do MDP extension cables that can also carry the audio exist (e.g., is Atlona AT13032-2 such a cable)?
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Apr 9, 2012
how do I install the new system? how do I protect myself from the viruses!
Info:
MacBook Pro, Mac OS X (10.7.2)
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Jun 13, 2012
Is there a way to view system processes in terminal in realtime, similar in fashion to how POST processes are displayed?
Info:
MacBook (13-inch Mid 2010), Mac OS X (10.6.8)
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Apr 20, 2012
I am having a problem with symbolic links getting corrupted. I have a new Mac Pro running 10.7.3.
I have defined symbolic links:
/Users/walker/G2S -> /Volumes/L2A/G2S [this is pointing to a different partition on the same JBOD RAID]
/home -> /Users
The second link was created after unmounting /home and removing it from the /etc/auto_master file. Both symbolic links worked for several days. But then for some reason, without a reboot, the links became corrupted:
> pwd
/Users/walker
> ls -al G2S
lrwxr-xr-x 1 walker staff 16 Mar 24 03:08 G2S -> X??G???G?G???G
> cd G2S
G2S: No such file or directory.
Same nonsensical definition for /home link. I repeat, this did not happen after a reboot. It first happened on /home. I thought that might have been related to a new OS handling of the "/home" label. So I deleted the /home link and did a clean reboot. The G2S link was created after that reboot, not before.
After the above two problems happened, I created a new symbolic link:
/Users/walker/G2S2 -> /Volumes/L2A/G2S
I then did not use this new symbolic link in any of my processing scripts. A few weeks went by, then this link somehow got corrupted too:
lrwxr-xr-x 1 walker staff 16 Apr 2 17:22 G2S2 -> G???G1?Gu?G
How symbolic links are managed on a Mac (any process that controls their linking?), or For example, could it be due to bad RAM?I have 32 GB.
Info:
Mac Pro, Mac OS X (10.7.3)
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May 14, 2012
Has anyone else noticed that flashupdater is filling their system.log with spew? This is happening on systems with and without flash installed. Sign, yet another blunder...
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Feb 14, 2012
When i click System Preferences on the apple menu nothing will happen.
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Feb 27, 2012
I have used Time Machine to backup my data on an external hard drive with ample space for the past year. However, for the past month or so when plug in my hard drive and try to back up my files using Time Machine, it completely freezes my computer, to the point where I need to hold down the power button for 10+ seconds and completely restart. At first I thought this might be due to not enough RAM, but discovered it does this even if all other programs are closed.
Info:
MacBook Pro, Mac OS X (10.6.5)
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Jul 3, 2012
I was having some weird problems with file sharing on my network recently, so I tried changing around some of the permissions on my drives to see if I could resolve it. For some reason I was getting messages saying I didn't have permission to copy files from one computer to another on my network. This seemed to come on randomly as we have been doing file transfers this way for quite some time now. I looked at our file sharing preferences in the System Preference's and added all 4 drives from my Mac Pro in there and made sure that my username had full read and write capabilities. I then tried logging into my Mac Pro from my iMac, just like I've done in the past, and I was still unable to copy the files. So I removed all the folders and turned off file sharing. I then clicked 'Get Info' for my main Macintosh HD and tried changing the permission settings there. I clicked the option to make my username the owner, and then I clicked 'Apply to enclosed items...' and this brought up a progress bar that I let go for about 10 minutes. Then I got a pop-up error message stating "System extension cannot be used" and had an extension path listed underneath, saying it was installed improperly and cannot be used. This happens an endless amount of times. It seems to be giving me this message for every single extension on the computer. If I hold down enter the pop-ups just keep coming with different extensions listed.
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Apr 9, 2012
I wrote an AppleScript script and saved it as an Applet that needs to run in the background whenever the system is up.
1/ I tried to set it as a startup item, so that it would start running as soon as the Mac is on -- however without success. I did not find out what the proper way is of doing this.
2/ Then I tried to set it as a login item for each user. This is not as good, but I thought it may an alternative, 'buying me some time' to figure out how to do it properly as a system startup item. Launching the app works fine, but the user cannot log off again, because the system cannot seem to quit the script. So I have to stop the process in Activity Monitor, obviously not a solution.
3/ Also, I would prefer the script to not show up in the Dock.
Info:
iMac, Mac OS X (10.7.3)
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Apr 14, 2012
I want to make a script that adjusts the output volume of my mac based on the volume that the mic hears. I am not very good with applescript, but I do know how to control the volume. I was wondering if there was a command that retrieved the input level from the mic as it is show in the sound preferences in the system preferences window.
Info:
MacBook Pro, Mac OS X (10.6.8)
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Sep 2, 2009
I am using Xcode to learn C from a windows-oriented "teach yourself" book. The executable file for the Hello World! program ends in .exe.I imagine that this would run if you double-clicked it in a windows operating system. Is there an equivalent extension for the mac? Or is it always only ran through the terminal program in the Xcode program?
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May 10, 2012
i downloaded a hash app but it came with a .dmg.cc extension. what is the cc suffix?
Info:
MacBook Pro (13-inch Late 2011), Mac OS X (10.7.3)
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Sep 1, 2014
I have many photos which I saved on disks from my windows computer. I have a mac and now cannot open any of these photos. Many have mix as the extensions.
Info:
MacBook Pro, Mac OS X (10.6.7)
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Sep 21, 2010
I could do it individually, but I am wondering and hoping there is an easier way. I have a bunch of .docx, .pptx, and .pdf files that need the extension after them.
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Mar 12, 2009
I'm sick of the short power cord on my MBA, what are my alternatives. I need a longer cord to reach the power port at school. Sure i can carry a regular extension cord that I can get from walmart, but i want something more aesthetical, Mac looking.
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Mar 16, 2009
i'm importing video from a vio pov1. its a lipstick camera that you film sporting things with.
i downloaded divx and persia(n)?...but have a few problems. my ultimate goal is to open the file in imovie and edit it. when i open the file in quicktime...i don't get any sound. i can run the file in div x successfuly and see the video and hear the sound but i want to edit the film in imovie and save it to the compuer. persian didn't do much....i still don't know what that even does. there was no evident change after downloading it.
what are my options? also...for some strange reason...even though i imported the original file using iphoto and its saved as an event...i can't bring it into imovie. i'm guesing that this is becuase it can't recognize the original extension?
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Apr 5, 2009
Is there a search extension out there that will display the first result from each of your installed search engines as you type? For example, says I type "Adam" and I have google, facebook, IMDB, and Wikipedia as my search engins; the extension would display the first result from google, facebook, etc in the window that pops up as you type. Then if I hit return (without clicking anything that pops up) it would take me to my default search (google).
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Nov 1, 2009
I once changed the file extension on a ppt presentation sent to me, and it finally opened. I read about it on here, but cant find the original forum thread and cant remember the extension: pxt or ptx or something similar.
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Dec 20, 2009
I just recently download a video file from Deposit Files & it downloaded without any extension? I am looking for a way to find out its extension & be able to open this video & play it in real player or quicktime as intended. Any time i click on the file the usually gibberish opens up in textedit.
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