Hi Erin,
The error you are receiving indicates that a work file already exists when a new one is to be created. This implies that a file that shouldn't be there in fact exists. Data Integrity Check does not look for temporary report files, which is why your data passes the check - and indeed is clean for everything except printing this report.
Try purging your Temporary files in Windows - as some reports in Adagio uses information here and perhaps it wasn't cleared out.
Also if you have the 'Remember Report Settings' option enabled in the Company Profile, try turning it off. In some older versions of Payables (such as 80A that you indicated is in use), there was a problem after conversion in saving the selection settings. Removing the above option was the easiest way to resolve this - and after successfully printing the report, you can turn it back on.
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Regards,
Softrak Tech Support