I followed this macbreaker guide to install OS X 10.8 on VirtualBox, on my win7 64bit machine. Everything was successful, and I even got sound working. However, I still see the following problems:

1. In full screen, my display is 1152x864, even though the native screen is 1600x900.

2. If I click on launchpad, the system freezes up for about 30 seconds, and nothing happens.

3. If I open a new tab in Safari, the default screen with the black curved surface where you can select recent pages flashes constantly.

Per the linked article step 7, I tried doing:


>vboxmanage setextradata "Mac108" "CustomVideoMode1" "1600x900x32"

VBoxManage.exe: error: Failed to create the VirtualBox object!

VBoxManage.exe: error: Code CO_E_SERVER_EXEC_FAILURE (0x80080005) - Server execu

tion failed (extended info not available)

VBoxManage.exe: error: Most likely, the VirtualBox COM server is not running or

failed to start.

As you can see, the command does not appear to work.

Researching possible solutions, I found this superuser thread. And I noticed that in the file on my ML Guest system "/Extra/org.chameleon.Boot.plist", I have these entries:


<key>Graphics Mode</key>


which seem to suggest that the correct setting is already there, but again it does not actually work.

Thanks very much for any help!