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Oracle's VirtualBox in Mac OS X: "VMMR0.r0 (VERR_SUPLIB_WORLD_WRITABLE)" error

Problem: VirtualBox VM does not start after updating VirtualBox. Says "VMMR0.r0 (VERR_SUPLIB_WORLD_WRITABLE)".

Solution: From here: For some reason the permissions under /Applications/ is changed to world writable. You can fix the permission by running Disc Utility and Repair Permissions. This fixes this problem.

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