I'm currently fairly busy at work and am not able to play Factorio as often as I'd like, but I do have enough time to fix bugs as people come across them.
If you find bugs- please report them in this post as you come across them. I will update within one or two days.
The Compound Splitter doesn't handle mixed materials very well, all but one material tends to back up in the buffer chest and on the input belts. A second material tends to 'sputter' onto the belts, I'm assuming this is due to the first material not being available on a given calculation tick.
Not sure if this is a bug, but a splitter can only output a full blue belt, I'm using Bob's Logistics mod and the splitter leaves gaps between objects that are split if the belt is faster than the vanilla blue belt.