Sean - I don't have LSP but I tried the files in Vixen. They do not give the same results. I even made a .lms version of the effect.
I converted the .lms and .vix to .Xseg using xlights. The .lms version was closer to being correct than the .vix version.
Ok, Gary, i think i know what the problem is.
It has to do with the logic for selecting strands for a half megatree.
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Try this , use your TEST2 tree (4x128). I know you only have 2 strings. Create an effect and set window as 360 degrees.
Load that up.I think that when vixen puts out strings 3 and 4, there is no hardware to respond so i think you will get your half megatree
for now, user the 4x128 and 360 degrees to create effects.
I will work on fixing this.