As you found in your other post, the answer is that the Invoice.Credit Note audit list reports have to be printed and purged in order to send the information to SalesAnalysis for retrieval. Just doing Day End isn't enough.

The Sales Report in OE doesn't have anything to do with the SalesAnalysis program. There is an option in the OE Company Profile to 'analyze sales data', and if this is selected then Day End will write to this file. There needs to be a data file OESALES.dat with a size greater than 0 bytes for the report to print anything.