For years I have been running into the error in forms '' is an invalid expanded name, which is a cryptic way of saying you need to set variable names for all fields.

Recently though I run into this in almost every single forms training. In each case, there is one field without a variable name, even though we did not set variables for any fields on the form. The field could be a radio button, or a multi-line, or a field within a table. It appears to be random, but the system selects one single field to give a blank variable name.

I would really like a Save button to verify that no variables are left blank before we run the task. A Save button would be really nice anyways just so that we can Save our form while working on it and don't lose any data.