This can be puzzling, Nonprofit24. This message appears if the exported report has more than 256 columns. Your report shows 7 columns only.

Although, the spaces between columns can be a factor why you encounter it. I'll help you remove them. 

Here's how:

1. Click Excel, then select Create New Worksheet.
2. In the Send Report to Excel window, click Advanced.
3. Uncheck the Space between columns box.
4. Click OK.
5. Select Create new worksheet, then click in a new workbook.
6. Click Export. 

You can refer to my screenshot below. 

You can also save the report as a CSV file instead. This will provide you more columns. Here's how:

1. Click Excel, then select Create New Worksheet.
2. Select Create a comma separated values (.csv) file.
3. Click Export. 

I'll add the article about exporting reports as Excel workbooks in QuickBooks Desktop for better guidance. 

If there's anything else that I can do for you, just tag me and I'll personally get back to you.