Ok, I'm a noob, we don't have two-decimal XP, only a rounding error that was worse than I remembered. V2.6 is pulled, I put up v2.5.5 instead which is identical except for the XP window. If you got one of the 2.6 downloads, you can keep it for fun.
mattsmum, the command only works if you keep the <include> line for the control center in eq2ui_mainhud.xml. maybe you took that out? Otherwise you mistyped the command maybe.