>How can I tell if the Printer in defined in the report enviroment?

Modify Report yourreport. Make sure that Report->Printer environment is NOT checked, and save.

By the way, it's a good idea to turn this "feature" (read: PITA) off permanently: Uncheck Tools->Options->Report->Save printer environment. To fix existing reports, you must open them, unccheck printer environment, and save them again.