Fri 28-Dec-12 01:11 AM | edited Fri 28-Dec-12 01:12 AM by wmcy
Thanks to everyone for your help and encouragement. I am pleased to report that I purchased the SanDisk-recommended Rescue Pro 4 (Standard edition) and was successful in recovering my Christmas photos! It also recovered a shoot from earlier in December 2 formats ago. The cost is $39.95 for a one-year subscription.
The process was not well explained online line but the support team was readily available via phone and was EXTREMELY helpful. I wouldn't wish this problem on anyone, but in the event it occurs, Rescue Pro is highly recommended.