Every time I install an update of itunes, I get an error message saying: "/System/Library/Extensions/WkClassicNotSeizeDriver.Kext" was not installed Correctly. Has any one had it? Can you help me?

Find out what that third party software the kext file belongs to and update or use the developers method to uninstall the third party software responsible for it.
I suspect it's a iTunes extension perhaps?
You also can use the manual method of Finder > Go > Computer and opening your drive, then your System/Library/Extensions folder and looking for the file and moving it out onto the desktop, you will need to be in Admin user and use your password, then reboot to clear the random access memory. However this method doesn't remove the parent program you still need to do that.
How to uninstall/install software on your Mac
The kext file wasn't loaded, so it's not running, but removing it from the Extensions folder or uninstalling what put it there will solve your notification problem as that's all it appears to be.

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The system extension "/System/Library/Extensions/WkClassicNotSeizeDriver.kext" was installed improperly and cannot be used.

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.
thanks for the helps.

Need to google WkClassicNotSeizeDriver.kext to find out exactly what this is but I don't think it's an apple kext so remove it.
/System/Library/Extensions/WkClassicNotSeizeDriver.kext
After removal reboot. That reboot will take a little longer since the kext cache needs rebuilding.
Update:
Google search found the following thread:
WkClassicNotSeizeDriver.kext ??? under 10.6
Googling "WkClassicNotSeizeDriver.kext" didn't turn up anything really definitive as to where this really came from but it did show others have seen that same kext. Just trash it.

Hi, just tried to upgrade to 11.2 but now when I try to open itunes I get an error message saying "the procedure entry point ADiAdID_acquirematchslotifnecessary could not be located in the dynamic link library iAdCore.dll". Any suggestions?

Hi, just tried to upgrade to 11.2 but now when I try to open itunes I get an error message saying "the procedure entry point ADiAdID_acquirematchslotifnecessary could not be located in the dynamic link library iAdCore.dll". Any suggestions for a non techy person?

See Troubleshooting issues with iTunes for Windows updates.
Try the repair tip in the third box first.
tt2

"/System/Library/Extensions/SilabsUSBDriver.kext was improperly installed

Hi everyone .... i've upgraded to snow leopard 2 weeks ago. that message above keeps popping up when i try to install a Garmin GPS USB enabled program.
what does it mean?? the dialog box also suggest i contact the manufacturer for updates?
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It also could be that the extension's permissions were improperly set when it was installed. Try repairing permissions with Disk Utility. If this doesn't fix the problem then it is as V.K. stated - simply incompatible. Just remove it from the /System/Extensions/ folder.

Hi, I am trying to update an iPhone 4 from iOS 4.3.3 to iOS 7.0.4, and every time I try to update it comes up with an error message saying that there was a problem because the network connection was reset. Is there any way I can get past this and update?

The full message said:
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I am trying to update the iPhone for my grandmother, Judy, as I am leaving for Paris on Wednesday night and we want to have Facetime installed on her iPhone before then, so we can stay in contact with each other. It is the simplest way for this to happen but the program simply will not allow me to update her iPhone.
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Dear Jody..jone5
Good for you that can't update your iphone because I did it and my iphone dosen't work for example I can't download any app like Wecaht or Twitter..
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Every time I try to install Itunes I get an error message saying it is unable to start services and to verify that I have sufficient privileges. I am the administrator. I have tried everything I can think of. When I click the ingore option it doesn't install corectly and I get a message saying MSVCR80.dll file is missing.

Try the following user tip:
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How do you fix the error - "The system extension "/System/Library/Extensions/IOBDStorageFamily.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update."

I have started getting this error every time I download anything to my computer. I want to know how to fix the issue so it dosen't happen anymore. The error is as follows:
The system extension “/System/Library/Extensions/IOBDStorageFamily.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
Please help me.

Darned drivers. Did you try using it without the drivers? They may already be in Mountain Lion. I'm super wary of vendor drivers for OS X; they're terrible and often an OS version out of date.
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I get the error message:System extension cannot be used The system extension "/System/Library/Extensions/AppleUSBthernetHost.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.

I get the error message after updating itunes:
System extension cannot be used
The system extension “/System/Library/Extensions/AppleUSBthernetHost.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
What or how do I fix this?

"I get the error message after updating itunes:
System extension cannot be used
The system extension “/System/Library/Extensions/AppleUSBthernetHost.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
What or how do I fix this?"
I have a MacBook Pro running Mas OS X Version 10.7.5
Is this a problem I need to fix? Is there a fix or update?

Message displayed: System extension cannot be used The 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.

Received following message during installation of an iTunes update today (9/16/14): System extension cannot be used. The 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. What is to be done about it?

Thanks for the reply. I'm not experienced in the inner workings of the iMac system and its programs, so please follow my train of thought as I try to find and understand your reply.
You wrote that I should check out "Please see - AppleUSBEthernetHost.kext error on installing iTunes update" and I did so.
There I found your reply of 9/1014 7:06 PM to j'ski stating: "There is a larger thread here which you may want to follow - system extension cannot be used AppleUSBEthernetHost.kext ."
And an earlier Post by Greg Earle of 9/10/14 5:57 PM stating: " You would have been better off doing open /System/Library/Extensions and then finding the AppleUSBEthernetHost.kext kernel extension icon in the Finder window that came up and moving it to the Trash."
And a subsequent Post on 9/15/14 at 2:59 PM by Rob Maurer stating: "This method worked perfectly for me. I am on a Mac Pro running Mountain Lion. Dragged the kext file to trash (I use EasyFind. Found the file, Revealed in Finder, dragged to Trash, entered admin password when requested). Downloaded iTunes 11.4 from the website. Installed from that download. Checked for that kext file in EasyFind again and found it had a creation date of 7/29/14 (the trashed one had a creation date from 2009). No more error messages. ITunes opens fine. Everything good. Will not update on my MacBook Pro until they fix this issue.
All of which leave me wondering - what is your answer/recommendation? Do I drag the kext file to trash, download iTunes 11.4 from the website and install it from that download, check for that kext file again to see if it has a later date than the initial one? And, if so, seed if iTunes opens okay or not? And if so, do not update iTunes again until Apple fixes whatever is wrong?

Splash screen says "System extension cannot be used The system extension "/System/Library/Extensions/PulseDriver.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update. How to fix?

Please help!
After installing iTunes 11.0.1 I got a splash screen that appears after all updates. The screen reads:
System extension cannot be used
"The system extension “/System/Library/Extensions/PulseDriver.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update."
Question: How do I re-install or replace this file?
Jim

I submitted the above question, later finding that it has been answered by Buller already. No one need reply as Buller's answer seems to solve the problem for others, and I'll try that.
Jim

The system extension "/System/Library/Extensions/IOSCSIArchitectureModelFamily.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.

The system extension “/System/Library/Extensions/IOSCSIArchitectureModelFamily.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
i keep getting this when i connect my ipod nano 6th gen to my Mac Mini. I am running the latest OS and the Latest Itunes. Not sure what the problem is.

For everyone with this problem:
Repair Disk Permissions.
My USB drive is recognised again, few!

I just got a message on my MacBook Pro. It said, message on macbook pro: The system extension "//System/Library/Extensions/AppleUSBethernetHost.kext" was installed improperly. Please try uninstalling it, or contact the product 's vendor for an update

I just got a message on macbook pro: The system extension "//System/Library/Extensions/AppleUSBethernetHost.kext" was installed improperly. Please try uninstalling it, or contact the product 's vendor for an update.
Anyone have any idea what this is about?

Sasha-
Maybe your looking in the wrong "Library". On my Mavericks; I open the HD to see a folder below the Library Folder called "Systems". Open the Systems Folder to see a "Library Folder". Open that library folder to see "Extensions folder". Open the extensions folder to find the "AppleUSBethernetHost.kext" and delete that extention. Following Lanny's post, do this:
1st- Close iTunes.
2nd- Delete the system extension “AppleUSBethernetHost.kext” from here:
//System/Library/Extensions/AppleUSBethernetHost.kext
3rd- go to iTunes 11.4 download, here: https://www.apple.com/itunes/download/
click on the "Download Now" link.
4th- Find the downloaded iTunes11.4.dmg file, open it, now open the Install iTunes.pkg
After the re-install as above I got the successfully installed window and no “pop up”
improperly installed AppleUSBMultitouch.kext warning window.
My System: 27" iMac 2.8 GHz Quad Core i7; 8 GB DDR3 SDRAM 2x4; 2 TB Serial ATA Drive; ATI Radeon HD 4850 Graphics with 512 MB; Using 10.9.4 Mavericks. AudioEngine A5's
Later, Robes

Help with this error message: System extenstion cannot be used:The system extension "/System/Library/Extensions/AppleACPIPlatform.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.

I have this error message:
System extension cannot be used
The system extension “/System/Library/Extensions/AppleACPIPlatform.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
Please help. Is there a update or how do I reinstall?
Thanks,
John

I submitted the above question, later finding that it has been answered by Buller already. No one need reply as Buller's answer seems to solve the problem for others, and I'll try that.
Jim

Every time I install an update of itunes, I get an error message saying: "/System/Library/Extensions/WkClassicNotSeizeDriver.Kext" was not installed Correctly. Has any one had it? Can you help me?

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