VirtualBox is available free from Oracle. In Sharing and Permissions: click on the padlock icon bottom-right to activate the settings.Right-click on the Applications folder and choose Get Info….Solution: Set the ‘everyone’ privilege to ‘Read only’ for the Applications folder. įailed to load VMMR0.r0 (VERR_SUBLIB_WORLD_WRITABLE).Ĭause: Incorrect read/write permissions on the Applications folder. VirtualBox Error: Mac OS X – Failed to open a session for the virtual machine. Upon installing VirtualBox, I was presented with the following error. Recently, I was trying to get VirtualBox up and running on a Mac running OSX for a client, so that I could load up Primavera P6 and Deltek Cobra. With so many different combinations and versions of Primavera P6, Deltek Cobra, MPM or wInsight that we need to have available to support our clients, virtual machines are really the only way to go.

We’ve been using virtual machines for quite some time to run different versions of the Oracle Primavera P6 and Deltek tool suites.

Virtualbox for mac