Not sure if will work for all kenmore's, but this has worked on my Kenmore Elite quite guard 5.
Repeat the following button sequence:
High Temp Wash, Heated Dry
High Temp Wash, Heated Dry
All lights will turn on.
Hit 'Cancel'
Now run through a 'Quick Clean' cycle and see if you've still got an error blinking/flashing light at the end of it. If not, you do not have a system/board problem. Just an apparent 'reboot' fix was in order.
Your machine should have reset now. You just saved yourself a $95 service call.
Cheers,
Lee
Lee C., April 2007