I am experiencing significant problems with Formulas questions, all related to questions that previously worked without problems. I will provide one example, but this seems to be a general issue.
If I for example take an existing question and do a preview, the question works, but there is something in the question that needs to be adjusted per day of a practical course. I also wanted to update a few other minor points in the question and therefore made a duplicate of the question. The first thing after making the duplicate is give it a suitable name and then try to save the (unmodified!) question. In Parts 1, 3 and 4, I get this error message:
In part 2, I get this error message:
Why did this previously work, and no longer so? The second error message I can get rid of by artificially adding 1E-12 to a few divisions, but this was previously never necessary. The first error message, I have really no idea … no matter how far I simplify the marking criteria it continues to give the error.