Amaya 6.1 fails to display correctly mml (v.1.) file gen by Openoff

Hello 

I attach a mml file generated by Openoffice, which  was not correctly 
displayed by Openoffice 1.0.1 using mml 1.01.

The line 
  <math:annotation math:encoding="StarMath 5.0">nroot{4}{7} </math:annotation>
seemed to have caused problems


Any comments?

Thanks



Uwe Brauer