I had the same error, and it happened when I selected "name" as the first field in column 1. When I saved the list, I received the same error (1 per user in the list) and all other fields in the list were shown (avatar, email, etc)
To fix it, go to your database and find the table jos_comprofiler_lists, then select your list, and click to edit it, then find the field 'col1fields', and uncheck the column "null" (if checked) and add the value '41' (which is the field id of 'name') to the 'value' field.
Your list should be fixed now. If your first column field is not name, you will have to find the corresponding field id on the table jos_comprofiler_fields
I hope this helps. This is obviously a bug.
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