Nevermind... I found the problem--broken Javascript. I guess the moral of the story is if you're using Javascript always check that first!

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I'm puzzled. I use a dropdown to set a value in one step of a process. When the form loads for the next step of the process, the dropdown on that same field is loaded with the word "null".

Some specific details of this situation include:

• The dropdown field is in a table. I added the dropdown with the "Add column from variable" link.
• The two steps of the process use two different forms, but I added the field the same way and I have confirmed that it is the same field.
• The list of possible values for the dropdown, in both forms, is loaded with a lookup rule. The lookup is configured the same way in both forms.

I'll be grateful for any suggestions as to what I should look for.

Thank you!