E00640068. "Interface is Unknown"

Could someone translate this message for me? I was backing up a partition, the D: drive from the C: partition of W98. My computer has 2 partitions containing W98se. One is a clean install onto a new physical drive. The other used to be W95, and I installed W98 over it. It does not work as well as the clean install. This is one of those times. I went over to the clean W98, and the same operation went OK.
I am using TI 8.0 Build 768.

Maybe I could fix it if I knew what the error meant. The full text is:
E00640068 Failed to create the scheduled task. Error #1717 "The interface is unknown".
It occurs after the windows for passwords and comments go away, and it is ready to start imaging.
What interface is it referring to?

 

Hello bob-m,

Thank you for choosing Acronis True Image (http://www.acronis.com/homecomputing/products/trueimage/).

Could you please send the screenshots of your actions in wizards and the error you get to support@acronis.com along with the link to this thread? We will try to help you with the solution.

Thank you.
--
Ilya Toytman

 

I tried 3 times to repeat the problem, and it worked OK each time, so I cannot supply the screenshots.

If it happens again, I will try to capture the screen.

But I did report in the 1st message here exactly what it said. Don't you have a list of these errors and some additional information about what the program is trying to do? It could give us a clue about where to look.
In the meantime, I guess a reboot should fix it , whatever it is.