So apparently OCCT personal won't run if your system has a "professional grade" chipset? Because it shouldn't be the CPU, it's a xeon 1650v2. It's a 2013 Mac Pro. The only things that could trigger it is the ECC RAM or the chipset.
The bigger question is why is the check there? This is my private trash can! God forbid someone buys an ex-corporate workstation and wants to stress test it. All I want to do is put a load on the GPUs!
Any way around this (that doesn't envolve a pro license)? It's a bit of a joke. It also happens when the machine is disconnected from the network, so it has to be somthing with this system.
EDIT: the plot thickens, it crapped the bed on a 2009 Mac pro (X58, Xeon, ECC) and now has crapped the bed on a Thinkpad W540, which has a consumer CPU, non ECC RAM, a consumer chipset but a Quadro GPU. Forcing Linux to only use the Intel integrated GPU got occt to launch. The logic here is fucken mint. What a joke.