IOS 10 OpenCL kernel self-test failed

[Jakems7]

When trying to -a 3 ?d?d?d?d attack on IOS 10 hash


./hashcat Manifest.5.txt -m 14800 -a 3 ?d?d?d?d


Getting 

Initialized device kernels and memory...* Device #2: ATTENTION! OpenCL kernel self-test failed.

when trying switch -O 

Optimized OpenCL kernel not found, falling back to pure OpenCL kernel

Tried steps as: 

make clean

make

just FYI: cracking an IOS 9 hash works and I dont get the kernel self test failure


./hashcat --benchmark is running well 

Any ideas?