Scanned photo thumbnails appearing as a question mark

[Venti3]

My Canon MP230 scans PDF documents no problem, however when I scan a photo it shows up as a question mark in a grey square (in my image garden). No photo to be found. 

I have tried scanning through both My image garden and Canon Quick Menu - I use a Mac. 

Last scanned photos over 6 months a go with no problem so not sure what I have done!

Unable to find this informationin the manuals or forum that suits my issue

Thank you for any help you can offer.

[Jason]

Hi, Venti3.

Which version of the Mac operating system are you running?
 
If this is a time-sensitive matter, our US-based technical support team is standing by, ready to help via Email at http://Canon.us/SupportCF
  
Thanks!