Dear Users,
<div><br></div><div>I was using GULP together with XtalOpt on a compound AxByCz. I gave the coordinates of B and C in the GULP input file and let XtalOpt to generate A coordinates randomly. It seemed to work fine for initial structures of the first generation. However, it gave the error of "XtalOpt::checkXtal: Composition incorrect." at the end of the first generation and no second generation structures could be created. I was wondering what caused this error. Thanks.</div>
<div><br></div><div>Regards, Wei</div><div> </div>