I've a problem with a formula in CR XI which I can't solve. I hope that some here can help me.
The problem is:
The warning is:
Cannot summarize this field.
How can I solve this?
I believe you should be summarizing the @field2 (person?) field.
If this field is on the detail section, right click it, choose insert and running total.
If the field is not in the detail section, just add it and hide it if not needed to be visible.
If you are trying to produce a count of persons, then use the distinct count type of summary.
If you are trying to count all dates for all persons then just use the count type of summary.
In both cases use Evaluate for each record and Reset never.
This way you are not trying to summarise an existing summary.
If it is a different count you are get, just let me know.