Hi there, I am using the iSlight disabler script from http://techslaves.org/isight-disabler/ on Yosemite. The reason being that I narrowed down the constant reboots with this one MacBook Pro to the camera. Now I would like it if I could have a script that runs at login checking whether or not permissions have changed due to Disk Utility or OS X updates. It would be great if it just silently checked each file and if everything's OK, then it doesn't do anything else. And if there are changes in the permissions, that it opens the disabler script to run it again. The drivers in question: Code: /System/Library/QuickTime/QuickTimeUSBVDCDigitizer.component/Contents/MacOS/QuickTimeUSBVDCDigitizer /System/Library/PrivateFrameworks/CoreMediaIOServicesPrivate.framework/Versions/A/Resources/VDC.plugin/Contents/MacOS/VDC /System/Library/PrivateFrameworks/CoreMediaIOServices.framework/Versions/A/Resources/VDC.plugin/Contents/MacOS/VDC /System/Library/Frameworks/CoreMediaIO.framework/Versions/A/Resources/VDC.plugin/Contents/MacOS/VDC /Library/CoreMediaIO/Plug-Ins/DAL/AppleCamera.plugin/Contents/MacOS/AppleCamera And it gets changed to chmod a-r, being a chmod a+r when it's enabled. If I could just get a link to somewhere that would explain how to do something like this, that would be fine. Thanks in advanced.