I’m having trouble getting the FootIK controls to behave in a sane manner. I’ve restarted from scratch twice and, even though I’m not putting in any x-axis movement, it’s in there and the feet get further and further apart as the rig moves forward. I tried it in 2.77a and 2.78c as well, but with the same results.
I should clarify:
When I say “as the rig moves forward” I’m talking about as it reacts to the cycle modifier (repeat with offset). With each iteration of the cycle, the feet move further apart. It’s as if the modifier from the y-axis is also being applied to the x-axis (which has a Repeat Motion modifier, not a Repeat with Offset).