9.10 < Troubleshooting>Common Linux problemsCondition Suggested solutionsThe printer doesn’tprint.• Check if the printer driver is installed in yoursystem. Open Unified Driver Configuratorand switch to the Printers tab in Printersconfiguration window to look at the list ofavailable printers. Make sure that yourmachine is displayed on the list. If not,please, invoke Add new printer wizard to setup your device.• Check if the printer is started. Open Printersconfiguration and select your machine onthe printers list. Look at the description inthe Selected printer pane. If its statuscontains “(stopped)” string, please, pressthe Start button. After that normal operationof the printer should be restored. The"stopped" status might be activated whensome problems in printing occurred.I encounter error“Unable to openmfp port devicefile!” when printinga document.Please avoid changing print job parameters(via LPR GUI, for example) while a print job isin progress. Known versions of CUPS serverbreak the print job whenever print options arechanged and then try to restart the job fromthe beginning. Since Unified Linux Driverlocks mfp port while printing, the abrupttermination of the driver keeps the port lockedand therefore unavailable for subsequent printjobs. If this situation occurred, please, try torelease the mfp port.Common Macintosh problemsCondition Suggested solutionsThe printer does notprint a document fromAcrobat Reader.Change the Print Method option to Printas Image when you print from AcrobatReader.The document hasprinted, but the print jobhas not disappearedfrom the spooler in MacOS 10.3.2.Update your Mac OS to OS 10.3.3 orhigher.The printer does notprint a document fromIllustrator on IPPprinting.Change the Data type option in theAdobe Illustrator print menu to Binary.Or, you can use Appletalk printing.