Dear Rietveld Community, I am a (new)user of TOPAS Academic v 4.1. Recently I had to reformat my c-drive and reinstall TOPAS on the same computer. After reinstalling, I cant get my program to work.It goes to the refinement process and then stops after one iteration and the following message pops up.
*"**Non-linear least squares (c) 1992-2007 Alan A. Coelho* *Loading C:\Topas-4\topas.inc* *This program is licensed to V5* *Number of independent parameters : 60* *Loading xyz's for Pnma from file C:\Topas-4\sg\pnma.sg* *Space group Pnma is centrosymmetric* *Number of equivalent positions 8* *Number of independent parameters : 60* *Number of hkls generated for C:\Topas-4\sg\pnma.sg 1201* *Loading atomic scattering factors from file atmscat.cpp* *0 Time 0.58 Rwp 17.559 0.000 MC 0.00 0* *Abnormal in refinement - please contact the author"* Any help on this issue is much appreciated. Thank you Sincerely Shishir Ray Graduate student Physics Department University of Wisconsin-Milwaukee
