HP Device manager and XSane no longer recognizes printer and

I have Linux Mint KDE 13.

Everything was working fine (I purchased and installed our LaserJet Pro 200 color MFP M276nw printer successfully about a month or two ago). Today XSane no longer recognize the device (it was fine until now). Then I checked HP Device Manager and it no longer sees our printer. I can still print through CUPS.

I tried refreshing the device through the HP Device Manger and even using the manual device discovery with my ip address but that doesn't result in the printer being found either.

I ran 'hp=check -t' in a command line and received HP Notification message of:

HP_LaserJet_200_colorMFP_M276nw Printer (CNC9DCD776)
Unsupported printer model (1900)

And for the fax I received a2nd message:

HP_LaserJet_200_colorMFP_M276nw Fax (CNC9DCD776)
Unsupported printer model (1900)

I ran 'hp=check -t' in a terminal and received the following:

HP Device 0x122a at 002:008:
    Device URI: hp:/usb/HP_LaserJet_200_colorMFP_M276nw?serial=CNC9DCD776
error: Unsupported model: HP_LaserJet_200_colorMFP_M276nw

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| USER GROUPS |
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marc adm cdrom sudo dip plugdev lpadmin sambashare

error: User needs to be member of group 'lp' to enable print, scan & fax.
User member of group 'lpadmin'.

-----------
| SUMMARY |
-----------

error: 2 errors and/or warnings.

Please refer to the installation instructions at:
http://hplip.sourceforge.net/install/index.html

Done.
marc@Mint ~ $

On a side note my e-mail (Thunderbird) was glitchy just before I tried XSane. I rebooted and my e-mail worked fine. It was after this that I tried XSane.

I do have HPLIP version 3.13.11 which I sucessfully downloaded when I sucessfully first installed my printer and scanner about a month or two ago.

Thanks in advance for your help with this.