Mike- In the past two weeks, at least one TMG user and one FTM user have reported problems printing graphical Family Group Sheets with XP. Too much printer resolution (over 600x600)was the definite cause with TMG and may have been the cause with FTM.
Your HP all in one printer is capable of very high resolution. So once again, you might try using Pdf995 set at 600x600 to lower the effective resolution.
With XP, I just managed to create satisfactorily colorful UFT Descendant Charts with Pdf995 at 600 dpi resolution and 1200 dpi resolution, but at 2400 dpi there was garbage. Resolution settings to the Pdf995 driver must be set in Control Panel. John