I have also done all these things (from another website)...not sure how to find spaces in my thousands of rows of dates though. I have no blank cells.


Problems when Grouping Data[/B]

If you try to group a date or number field, you may see an error message that says, "Cannot group that selection."

This problem usually occurs when the field contains records with a blank date/number field, or text in a date/number field. To fix the problem

For blank cells, fill in the date/number (use a dummy date/number if necessary).
If there is text in the date/number field, remove it.
If numbers are being recognized as text, use one of the techniques to change text to real numbers. Then return to this pivot table tutorial, and try the grouping steps.

If you don't have blank cells or text in the date column, there may be a grouped field left over from the previous time that you grouped the data.

Check the field list, to see if there's a second copy of the date field, e.g. Date2.
If there is, add it to the row area, and ungroup it.
Then, you should be able to group the date field again.