.
You should not have to specify the workspace names in the print style, and it is better off that you don't. That's an advanced feature that is supposed to allow printing designs using a different workspace than the one loaded in the current MicroStation session. If the print definition workspaces are blank in Print Organizer, the designs will be printed using the current workspace, which is likely what you want.
If ustation.exe is not being invoked with any command-line arguments, then you may fall into one of the custom configuration situations where designs do not display correctly in read-only mode. Is this the case? You can test it easily enough by opening your design in read-only mode and seeing the symbology is correct. If that's the problem, then you can change the Print Organizer preferences to load the design files in read-write mode. The default is read-only.