1. Unplug the USB cable from the back of your unit.
2. Go to Apple - System Preferences - Print & Fax.
3. Select your printer listed on the left pane of the window and click the minus (-) button.
4. Delete the files/folders from the following from the HD. To find this folder, Select 'Go' from the Finder Menu and select 'Go to Folder.' Type the following: /Library (Some files may not be present depending on the version of the driver installed):
Macintosh HD - Library/Caches/DPxxxFilter.log or LXxxxFilter.log*
Macintosh HD - Library/Printers/Lexmark/Frameworks/prdrhpec.framework
Macintosh HD - Library/Printers/PPDs/Contents/Resources/DPxx.ppd* or CL900.ppd.
Macintosh HD - Library/Printers/Primera
*The xx indicates the name of this file can vary depending on the model of Primera printer you have installed.
5. Select 'Go' from the Finder Menu and select 'Go to Folder.' Type the following: /usr/libex/cups/filter
6. Delete the following files:
commandtoDPxxx* / cammandtoLXxx*
rastertoDPxxx* / rastertoLXxx*
7. Select 'Go' from the Finder Menu and select 'Go to Folder.' Type the following: /private/var/db/receipts/
Delete the following files:
com.primera.driver.DPxxx.bom* / com.primera.driver.LXxxx.bom*
com.primera.driver.DPxxx.plist* / com.primera.driver.LXxxx.plist*
* -This indicates the name of this file can vary depending on the model of Primera printer you have installed.
8. Go to Macintosh Hard Drive – Library – Receipts. In here there will likely be a receipt corresponding to your printer. For example, an LX900 Color Label Printer might have a receipt package called Driver LX900v1.0.pkg. Look for any driver receipts and delete them.
9. Go to Macintosh HD - <userfolder> - Library – Preferences – ByHost - and delete the file:
“com.Apple.Print.Cache.00xxxxxxx.plist”
(Note: On Mac 10.7 and 10.8 the User Library is a Hidden Folder. You will need to go to Go - Go to Folder. Type in ~/Library/ to access this hidden folder.)
10. Delete any Primera driver installers you might have saved to your desktop or any other location on your Mac.
11. Empty trash.
12. Download your printer drivers from the following link. http://www.primera.com/primera_printer_drivers.html
13. Follow the onscreen instructions to install your printer drivers and add your printer to Print & Fax under System Preferences.