Comment 1 for bug 157843

I think vmware counts on the usbfs filesystem which seems to have been removed in gutsy

as far as I know there are two options to resolve this

1.
add following line at the end in /etc/fstab

usbfs /proc/bus/usb usbfs auto 0 0

2.
change /etc/init.d/mountdevsubfs.sh
remove comment from the following 4 lines starting with mkdir -p /dev/bus/usb/.usbfs

        #
        # Magic to make /proc/bus/usb work
        #
        mkdir -p /dev/bus/usb/.usbfs
        domount usbfs "" /dev/bus/usb/.usbfs -obusmode=0700,devmode=0600,listmode=0644
        ln -s .usbfs/devices /dev/bus/usb/devices
        mount --rbind /dev/bus/usb /proc/bus/usb

then reboot (if you can't reboot -> execute those 4 commands or mount usbfs manually)