CFREPORT Fails to produce formatted report, i.e., PDF

What can I do to restore the CFREPORT Output to normal allowed formats? I have had reports working without error for FIVE YEARS and suddenly the now the report output for LARGE datasets produces ONLY the Symbolic language of the selected FORMAT, i.e., PDF, FalshPaper, etc. Small datasets produce the report; large datasets dump a query and then display the "gobble-de-gook" language of the format elected.

Will reinstalling Coldfusion help?

This is a server running in VMWARE, 64-bit Windows Server 2008; Coldfusion 10, 64 bit.

Please help.

Thanks

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Dick Shackelford

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