Re: Printer not printing even though it shows up when I click print

Hi Mhowemccabe,

Thank you for visiting the HP Support Forums and Welcome. I have read your thread on your Mac 10.6 and your HP Officejet Pro 8600. Here is fix that should help.
On the upper left corner of the computer desktop, click the Apple menu icon  and then click System Preferences on the drop-down menu.
1. Click Print & Fax in Mac OS X 10.6 or Print & Scan in OS X 10.7 to open the Printers list.
2. In the Printers list, select your HP printer, and then click the Minus button  to delete it.
3. Exit all open windows or programs, and then restart the computer.
4. When the computer restarts, click the Apple menu icon  and then click System Preferences on the drop-down menu.
5. Click Print & Scan to open the Printers list.
6. If the printer does not automatically add to the Printers list, click the Add button.
7. Select your HP printer from the list, and then click Add . After a few seconds, the printer displays in the Printers list.
8. Try printing again.

Here is a link to the HP Officejet Pro Full Feature Software for Mac 10.6.

Hope this helps.

Thanks.