I'm getting the same thing. Defraggler runs till appx. 88-89%, then I get an error window that says,
"Defraggler has encountered a problem and needs to close. We are sorry for the inconvenience."
At the bottom of the window is a prompt to send a Microsoft Error Report.
I have version 1.20.201
I uninstalled it from my computer, then reinstalled it. Same problem
Computer reboot does not help.
Until last week the Defraggler worked just fine.
Any suggestions.
Thx!