Hello there,
Lately I'm having issues, although I didn't update my build (3.0.17) with what seem to be an inverted axis problem. It seems to only affects combing and gravity. Basicaly Gravity is positive Z, strands are bending upward, while combing bends the opposite direction of the sinks guides.
Since it happened all of a sudden I'm more inclinde to believe something happened inside of max rather than in Ox itself, but if anyone has an idea of where this could come from... I reinstalled Max 2014 but this didn't fix it. It also affects Max 2015...
Erwann