Hello Melika,
Thanks for looking into this further. I have attached the .rea file I am using, and the .sdat file I am trying to load. It is the FeOH+.sdat file that was supplied with GWB Professional Version 10, and it works fine when I work with the Co-Precipitation.rea file downloaded from the Academy. I tried to set up the 170808 HDS-Lime_1.8g.rea file the same as the Co-Precipitation file with just changes to the chemical parameters and concentrations.
Cheers,
Bruce
FeOH+.sdat
170808 HDS-Lime_1.8g.rea