I update simplecad.lpi in trunk, now it work.
But last in last commits are a lot of ongoing changes, it will work, but with some problems. You will also need to comment this fragment in line 1575 generalwievarea.pas
f:=pdwg^.GetUnitsFormat;
htext:=sysutils.Format('%s, %s, %s',[zeDimensionToString(param.md.mouse3dcoord.x,f),zeDimensionToString(param.md.mouse3dcoord.y,f),zeDimensionToString(param.md.mouse3dcoord.z,f)]);
if param.polarlinetrace = 1 then
begin
htext2:=sysutils.Format('L=%s',[zeDimensionToString(param.ontrackarray.otrackarray[param.pointnum].tmouse,f)]);
htext:=sysutils.Format('%s (%s)',[htext,htext2]);
getviewcontrol.Hint:=htext2;
Application.ActivateHint(getviewcontrol.ClientToScreen(Point(param.md.mouse.x,param.md.mouse.y)));
end;