Thanks for the info and save! Good catch.
I discovered this happens specifically when you have a dynamic key and the machine lists targets which have a negative base chance of success, since the dynamic key is currently a multiplicative modifier and will make the chance even more negative in the middle of the calculations, but you only notice this effect if you also have enough other positive modifiers (hackware, botnets, Operator allies, etc) to bring the negative chance back into the positive to actually hack it!
Fixed for next release.
