It appears that the genesis for Version 4 of the Users Guide was Version 3. While this is certainly acceptable, it would be nice if the references to Version 3 were eliminated from Version 4. I refer, for example, to the mention of Version 3 beginning on page 15 of the V4 User Guide. It would also be great to know what has basically changed between V3 and V4 latest build. Personally, I found V3 to be completely unusable due to software instability. To be fair, the latest build of V4 does seem much more stable. I am hoping this is true throughout the design cycle, as I am actively trying to design a new board using it.