OK, something weird is definitely going on.
Loading my XML on a different computer, and inputting the ODTaper2 file you supplied I get what you can see in the ODT1 screenshot file below, which looks very close or identical to the simulation diagram I get on the actual lathe computer where all of this started.
Loading the same ODTaper2 file under the standard non customized XML, (Mach3 turn) I get what appears in ODT2 screenshot. Interesting thing is, this looks like what the lathe actually cut. You can see how flat the angle is-it's not the 45 degrees I need.
Incidentally, what version are you running? I'm not at the lathe so I don't know the exact version, but it's in the 2's I think. The other test computer I'm using is running version 3.042.
Mr. Technical