What does this error mean?

[claire99]

I got an error message when I run the program below:

CustomerRPT.ExportOptions.DestinationType = crEDTDiskFile
        CustomerRPT.ExportOptions.DiskFileName = "C:\CustomerInfo.rtf"
        CustomerRPT.ExportOptions.FormatType = crEFTExactRichText
        CustomerRPT.Export (False)

Error message:
"Run-time error '-2147192184(80047288)': server has not been opened"

What does this error mean? What should I do?
Thanks!