I wonder if anyone can help.
I have frequently used the 'add new rate law' button and have just moved from version 4.35 to v4.37 (Mac, Intel) .
Now when I add a new rate law I cannot assign and commit a description to a name i.e., if S is a substrate in my rate law, when I select the descriptor 'substrate' in the drop down menu and hit commit, it reverts to 'parameter'. In the attached screenshot, you can also see that although I have selected 'substrate' for S, the application restrictions have not recognised this. (I am not sure why the Units are also missing. This is not the case for the pre-assigned functions).
I don't think I am doing anything differently to how I used v4.35.
Any help appreciated,