If Print Console is not working you can purchase a Harlequin RIP that will output the Trendsetter directly at:
Heidelberg Trendsetter Workflow RIP Software Harlequin RIP Heidelberg Trendsetter 3230 3244 Quantum RIPs
You may want to consider contacting Heidelberg to see how much it would cost to get your Print Console to a version that can accept TIFFs from a Harlequin RIP. You can purchase a TIFF RIP for around $3,500, so depending on the cost to get your console accepting TIFF files, it may be better to get a full Trendsetter RIP-Kit with the card and cable to drive the Trendsetter directly plus then you could also output TIFF files in case you added a second platesetter that could accept TIFFs.
Are you using the demo version of the Harlequin RIP? The demo version does place watermark boxes on the output so maybe this is what you are seeing?