I recently updated mycroft on linux. Precise will fail shortly after starting mycroft. I have some linux skills ( not expert ) and I tracked it down to the tensorflow library. It was complaing about an illegal opcode. After trying a rebuild without success I installed mycroft on a different computer where it worked. Since both computers were using the same distribution I concluded it was something peculiar to one machine.
After some googling I found something about precise and tensorflow using the AVX instruction which is not supported on older CPUs. This seems to fit my situation.
How do I get the previous version of .mycroft/precise/precise-engine/libtensorflow_framework.so?