I am working with a program that copies data from Oracle Database and then populates a spreadsheet in Excel. The program has always worked and still works except on one computer. The program will not open excel and I get error #2147024895 Automation error. Does anybody have any suggestions as to what is causing this error? The only other time I've seen this error with our program was on a users computer who was using a database add-in named Hyperion. I've checked this user's Excel setup, and there aren't any add-ins being used that aren't being used on computers not recieving the error.