I am using TOUGH+Hydrate and I'm fairly new to it and learning as I go. I am using injection of water into a gas bearing reservoir. I wanted to include the diffusion block and tried the example on the TOUGH+Hydrate v1.5s manual. I am getting the following error shown in the attached image. I don't know why it is not recognizing the input since it says that diffusion block is read as namelist format. Can anyone point out what I am doing wrong and what I need to do?