I suspect you don't have the kernel headers for your running kernel installed.
Do you actually have the "linux-headers-4.3.0-040300rc4-lowlatency" package (or whatever package providing those headers in Ubuntu) installed on your system ?
Could you give me the output of "sudo apt-config dump | grep Recommends" ?
I suspect you don't have the kernel headers for your running kernel installed.
Do you actually have the "linux- headers- 4.3.0-040300rc4 -lowlatency" package (or whatever package providing those headers in Ubuntu) installed on your system ?
Could you give me the output of "sudo apt-config dump | grep Recommends" ?