I have a rig with 6 x 6700s and 6 Nvidia cards. Windows 10 with latest updates
Has been working ok on 5.8 but has started causing me issues, generating errors on PM start:
Failed to compile program: clBuildProgram (-11)
Unable to prepare kernels: clCreateKernel (-46)
Fatal error detected. Restarting.
No idea why, has been working and stable(ish) for months. Maybe windows update.
So, I thought it might be time to update, so updated gfx drivers and trying to update to 5.9d, but just starts and immediately exits

D:\Test>PhoenixMiner.exe -pool ssl://eu1.ethermine.org:5555 -pool2 ssl://us1.ethermine.org:5555 -wal 0x008c26f3a2Ca8bdC11e5891e0278c9436B6F5d1E.Rig001
Phoenix Miner 5.9d Windows/msvc - Release build
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CUDA version: 11.0, CUDA runtime: 8.0
D:\Test>
Does the same on two of my other rigs, using both my config.txt and the default startminer.cmd
Am I missing something stupid?