Why does Adobe print an error message, when I can see it fine on the screen?

Try choosing "print as image" under Adobe Reader print options. Also try choosing a Postscript printer driver if you have one installed. You may also need to update your printer driver, which you can do for free at www.driverguide.com. If you are using a Mac, your default program will be PreView. You may need to save the file to your desktop and then open Adobe Reader and open the file through Adobe.