xorg.conf is missing the InputDevice and Monitor sections.
Does your X work or not? /etc/X11/xorg.conf could be generated on-the-fly, so it may not generate them when using defaults. Try to move the file somewhere else and restart X. What happens?
It works fine, but when a program (such as the install for vmware tools) tries to update it, the sections are missing, so the config fails.
The vmware tools are broken. Missing sections are perfectly legal.