Microsoft Excel ActiveWorkBook -> (Null Object)

I created a new Excel sheet, entered data in a couple of fields, ran the function up to the point where it assigned oWorkbook... oWorkbook was not-null.



So... Again, I'm not sure what the problem is as I cannot reproduce it in a simple environment which tells me that it's a problem either in your environment or in the sheet itself (where it is not available to the Excel.Application).