Problem with Probkup

I cannot backup my databases using Probkup any more - I am using
OpenEdge Version 10.1B

I get error message "The last backup was not completed succesfully
(1553)"

The last thing I did was update my Test Software from version 6.0A to
7.00 but thought I was only doing Test.

Any clues ?

There are no spaces in the command line path and there is plenty of
space on the server.