Hi Scott,
The error that you are reporting is indicative of a missing Registry Entry that Adagio requires to print it's management reports. Adagio uses the Crystal Reports print engine for reports, and a path is stored in the Windows registry to locate the report tables. This registry entry is stored on the local machine, and written by the workstation setup.
I don't know what setup parameters Red Hat Linux requires, but the underlying issue is that Adagio is looking for a registry entry and can't find it. Try running the workstation setup and see if that helps.
Can you print or preview any other reports? My guess is that you can't.
The other possible issue is that all of the report tables are not installed correctly. There should be a \QRASP directory on the root of the specified 'report tables drive' when Adagio was installed. The only real solution is to reinstall Adagio and make sure you select a shared network drive for the Report Tables. It's best to simply select the same drive you are installing Adagio to.